LIST OF SELECTED ARTICLES
  1. Zheludev I.S., Vlokh O.G. Electro-optic effect in crystals. Kristallografiya, 1958 v.3, N5, p.639-651.
  2. Vlokh O.G., Zheludev I.S. Change of the optical properties of crystals at the application of the electrical field (Linear electro-optic effect).  Kristallografiya. 1960 v.5, N3, p.390-402.
  3. Vlokh O.G. On the dispersion of the electro-optic coefficient in ADP and KDP crystals.  Kristallografiya, 1962 v.7, N4, p.632-633.
  4. Zheludev I.S., Vlokh O.G. On the question of morphology symmetry of the pentaeretryte crystals.  Kristallografiya, 1962 v.7, N5, p.784-785.
  5. Vlokh O.G., Zheludev I.S., Shamburov V.A. Electro-optic effect in the pentaeretryte C(CH2OH)4 crystals.  Kristallografiya, 1963 v.8, N1, p.51-56.
  6. Belyaev L.M., Vlokh O.G., Gilvart A.B., Dobrzhansyy G.F., Netyesov G.B., Shamburov V.A., Shuvalov L.A. Linear electro-optic effect in hexamethyl entetramine (urotropine)  C6H12N4. Kristallografiya, 1963 v.8, N3, p.482-483.
  7. Vlokh O.G. Optical indicatrix deformation at the square electro-optic effect and at the electro-optic effect induced by spontaneous polarization. Ukr.Fiz.Zhurn.,1965, v.X, N10, p.1101-1118.
  8. Vlokh O.G., Lutsiv-Shumskyy L.P. On the dispersion of the r63 coefficient of the pure electrooptical effect in NH4H2PO4 crystals. Ukr.Fiz.Zhurn., 1965, v.X, N10, p.1119-1122.
  9. Vlokh O.G., Lutsiv-Shumskyy L.P. Electro-optic effect in triglycine sulphate crystals induced by spontaneous polarization. Ukr.Fiz.Zhurn., 1966, v.XI, N9, p.1003-1010.
  10. Vlokh O.G. Dispersion behaviour of the linear electro-optic effect in the quartz crystals. Ukr.Fiz.Zhurn., 1966, v.XI, N11, p.1184-1190.
  11. Vlokh O.G., Lutsiv-Shumskyy L.P. Electro-optic effect induced by spontaneous polarization in the ADP and KDP crystals. Izv. AN SSSR, ser.phys., 1967, v.XXXI, N7, p.1139-1142.
  12. Vlokh O.G., Lutsiv-Shumskyy L.P. Longitude electro-optic effect in the near ultraviolet and infrared spectral range of the potassium dihedral phosphate. Izv. AN SSSR, ser.phys., 1967, v.XXXI, N7, p.1143-1144.
  13. Vlokh O.G., Lutsiv-Shumskiy L.P. Temperature and dispersion dependence of the r63 electro-optic coefficient in the  ADP crystals. Kristallografiya, 1967, v.12, N3, p.443-446.
  14. Vlokh O.G., Lutsiv-Shumskiy L.P. On the electro-optic effect in the Rochelle salt crystals induced by spontaneous polarization. Kristallografiya, 1967, v.12, N3, p.455-458.
  15. Vlokh O.G., Lutsiv-Shumskiy L.P., Kinakh S.P. Experimental study of the discrete optical beams deviation in ADP type crystals by the electro-optic effect. Opt.Spectr., 1968, v.XXV, N3, p.424-425.
  16. Vlokh O.G., Lyubitskiy T.T., Fifth-rank tensors and tertiary electro-optic effect in crystals. Ukr.Fiz.Zhurn., 1968, v.13, N12, p.2087.
  17. Vlokh O.G., Lutsiv-Shumskiy L.P. Lyubitskiy T.T. Temperature and dispersion dependence of the r41 electro-optic coefficient of ADP and KDP crystals. Izv. AN SSSR, ser.phys., 1969 v.XXXIII, N2, p.284-286.
  18. Vlokh O.G., Lutsiv-Shumskiy L.P. Dispersion and temperature dependence of r63 and D66 electro- and piezo-optic coefficients of KDP and ADP crystals. Ukr.Fiz.Zhurn., 1969, v.14, N2, p.322-326.
  19. Vlokh O.G., Krushel'nitskaya T.D. (1970). Axial four-rank tensors and quadratic electro-gyration, Kristallografiya 15(3), 587-589
  20. Vlokh O.G. Electro-optic activity of quartz crystals. Ukr.Fiz.Zhurn., 1970, v.15, N5, p.758-762.
  21.  Vlokh O.G., Lutsiv-Shumskiy L.P. Photo-elastic effect on the 45o-x cut of KH2PO4 and NH4H2PO4 crystals. Phys.Sol.Stat., 1970, v.12, N1, p.313-314.
  22. Vlokh O.G., Kutniy I.V., Lazko L.A., and Nesterenko V.Ya. (1971), Electro-gyration of crystals and phase transitions. Izv.AN SSSR, ser.fiz. XXXV (9), 1852-1855.
  23. Vlokh O.G., Lutsiv-Shumskiy L.P., Pulupushin B.P. On the electro-optic and piezo-optic properties of the KH2PO4 crystals at high temperatures. Kristallografiya, 1971, v.16, N4, p.828-829.
  24. Vlokh O.G., Zaytsev V.K., Klimov I.M., Lobskiy M.I., Ovchinnikov V.M., Pirogov Yu.A. Some parameters of quartz crystals at their application for electro-optic light modulation. Opt.Spectr., 1971, v.XXX, N6, p.1104-1107.
  25. Vlokh O.G. (1971) Electrogyration effects in quartz crystals, Pis.JETF. 13, 118-121 [Blokh O.G. (1971) "Electrogyration effects in quartz crystals", Sov.Phys. Pis.JETF. 13, 81-83.]
  26. Vlokh O.G., Kutnuy I.V., Nesterenko V.Ya. Electro-optic effect in iodide acid crystals. Ukr.Fiz.Zhurn., 1971, v.16, N2, p.327-328.
  27. Vlokh O.G. Linear electro-gyration in the quartz crystals. Ukr.Fiz.Zhurn., 1971, v.16, N5, p.734-737.
  28. Vlokh O.G., Klimov I.M., Lobkiy M.I., OvchinnikoV.M., Pirogov Yu.A. Electro-optic properties of quartz crystals at DC-field. J.Appl. Spectr., 1972, v.XVI, N6, p.1079-1083.
  29. Vlokh O.G., Lazko L.A. Nesterenko V.Ya. Founding of the linear electrogyration effect in  -HIO3 crystals. Kristallografiya, 1972, v.17, N6, p.1248-1250.
  30. Vlokh O.G., Klimov I.M. Gyrotropy and asymmetry of the electro-optic properties of quartz crystals. Ukr.Fiz.Zhurn., 1972, v.17, N8, p.1372-1374.
  31. Vlokh O.G., Klimov I.M., Kobylyanskiy V.B. On the elliptical polarization of the monochromatic waves in the single axial gyrotropic crystals. Ukr.Fiz.Zhurn., 1973, v.18, N12, p.2055-2058.
  32. Vlokh O.G., Lazko L.A. Electro-optic effect in the L-ramnose crystals. Kristallografiya, 1974, v.19, N2, p.398-400.
  33. Vlokh O.G., Zheludev I.S., Lazko L.A. Gyrotropy of the L-ramnose crystals. Kristallografiya , 1974, v.19, N6, p.1200-1203.
  34. Vlokh O.G., Kobylyanskiy V.B. Effect of the gyrotropy parameters on the behaviour of light polarization. Ukr.Fiz.Zhurn., 1974, v.19, N7, p.1129-1135.
  35. Vlokh O.G., Kobylyanskiy V.B., Lazko L.A. Light interference in the single axial gyrotropy crystals and its application for the gyration tensor components determination. Ukr.Fiz.Zhurn., 1974, v.19, N10, p.1631-1638.
  36. Vlokh O.G., Lutsiv-Shumskiy L.P., Ostapchuk V.P. The deuterium doping influences on the electro-optic properties of the KDP crystals. Phys.Sol.Stat., 1974, v.16, N1, p.271-273.
  37. Popel A.M., Stasyuk I.V., Vlokh O.G. Microscopic theory of the electro-optic effect in the KH2(1-x)D2Èòï4 (DKDP) crystals. Phys.Sol.Stat., 1974, v.16, N11, p.3526-3528.
  38. Vlokh O.G., Zheludev I.S.and Klimov I.M. (1975), Optical activity of the centrosymmetric crystals of lead molibdate - PbMoO4, induced by electric field (electro-gyration), Dokl. AN SSSR. 223(6), 1391-1393.
  39. Vlokh O.G., Klimov I.M. Spontaneous birefringence in the lead molybdate crystals. Izv. AN SSSR, ser.phys., 1975, v.39, N5, p.978-982.
  40. Vlokh O.G., Krochuk A.S., Lutsiv-Shumskiy L.P., Smyshko E.V. Refractive indices and r41 electro-optic coefficient of K(DÈH1-x)2PO4 crystals. Izv. AN SSSR, ser.phys., 1975, v.39, N5, p.983-986.
  41. Vlokh O.G., Velychko I.A., Lazko L.A. Peculiarities of the electro-optic effect in LiIO3crystals, Kristallografiya, 1975, v.20, N2, p.430-432.
  42. Vlokh O.G., Zheludev I.S., Lazko L.A. Anisotropy of the electro-optic effect in the L-ramnose crystals. Kristallografiya, 1975, v.20, N2, p.433-434.
  43. Vlokh O.G., Laz'ko L.A., Zheludev I.S. (1975). Effect of external factors on gyrotropic properties of LiIO3 crystals, Kristallografiya 20(3), 654-656 [Sov.Phys.Crystallogr.,20(3), 401]
  44. Vlokh O.G., Lazko L.A. and Zheludev I.S. Optical activity of the Rochelle salt crystals. Kristallografiya,  1975, v.20, N5, p.1056-1058.
  45. Vlokh O.G., Lazko L.A. Gyrotropy and electro-optic effect in  -HIO3 crystals. Ukr.Fiz.Zhurn., 1975, v.20, N3, p.508-510.
  46. Vlokh O.G. Peculiarities of the electro-optic effect in the pentane erythrite crystals. Ukr.Fiz.Zhurn., 1975, v.20, N6, p.922-924.
  47. Vlokh O.G., Lutsiv-Shumskiy L.P., Popel O.M., Stasyuk I.V. Transverse electro-optic effect in the KH2(1-x)D2Èòï4 crystals. Ukr.Fiz.Zhurn., 1975, v.20, N8, p.1379-1381.
  48. Vlokh O.G., Zheludev I.S. Electro-gyration in the ferroelectric crystals, Izv. AN SSSR, ser.phys., 1977, v.41, N3, p.470-477.
  49. Strukov B.A., Synyakov E.V., Mayschyk E.P., Minaeva K.A., Monya V.G., Vlokh O.G. Ultrasound relaxation, diffusing of phase transition and some physical properties of the lead germanate crystals and solid solutions on their basis. Izv. AN SSSR, ser.phys., 1977, v.41, N4, p.692-699.
  50. Vlokh O.G., Kobilyanskiy V.B. Correlation of the birefringence and electro-gyration in crystals. Kristallografiya, 1977, v.22, N3, p.562-565.
  51. Vlokh O.G., Zarik A.V. (1977), The effect of electric field on the polarization of light in the Bi12SiO20, Bi12GeO20, NaBrO3 crystals, Ukr.Fiz.Zhurn. 22(6), 1027-1031.
  52. Vlokh O.G., Sinyakov E.V., Lazko L.A., Monya V.G., Klimov I.M. Electro-gyration and dielectric properties of the lead germanate crystals and solid solutions on their basis. Phys.Sol.Stat.,  1977, v.19, N4, p.1032-1035.
  53. Vlokh O.G., Lutsiv-Shumskiy L.P., Pirogov Yu.A. Photoelasticity and electro-optic effect in the KH2(1-x)D2Èòï4 crystals at the forbidden deformation. Ukr.Fiz.Zhurn., 1978, v.23, N1, p.146-148.
  54. Vlokh O.G., Sinyakov E.V., Lazko L.A., Monya V.G. Spontaneous and induced electro-gyration in the [Pb1-xBix]5Ge3O11 crystals. Phys.Sol.Stat., 1978, v.20, N7, p.2098-2100.
  55. Vlokh O.G., Lutsiv-Shumkiy L.P., Khachikyan A.V. Dispersion of the refractive indices and electro-optic coefficients of the partially deuterium doped CDA crystals. Kristallografiya, 1980, v.25, N2, p.418-419.
  56. Vlokh O.G., Sinyakov E.V., Lazko L.A., Shopa Ya.I., Kraycherek A.Ya. Electro-gyration and dielectric properties of the silicon impurity. Phys.Sol.Stat., 1980, v.22, N1, p.227-229.
  57. Vlokh O.G., Lazko L.A. and Shopa Y.I. Electro-gyration and electro-optic properties of the solid solutions on the basis of lead germanate. J.Phys.Soc.Jap.  Suppl. B., 1980, v.49, P.150-151. .
  58. Vlokh O.G., Zarik A.V. Optical activity of the cadmium thiogallate. Ukr.Fiz.Zhurn., 1981, v.26, N7, p.1087-1090.
  59. Vlokh O.G. Magneto-gyration. Symmetry aspects and experimental finding. Ukr.Fiz.Zhurn.,1981, v.26, N10, p.1623-1626.
  60. Vlokh O.G. The electro- and magneto-optic phenomena in the solid solutions on the basis of lead germanate. Ferroelectrics, 1981, V.37, p.745.
  61. O.G.Vlokh, L.A.Lazko, and Ya.I.Shopa. Electro-optic and electro-gyration properties of the solid solutions on the basis of lead germanate.  Phys.Stat.Sol. (a), 1981,  v.65, p.371-378.
  62. Vlokh O.G., Golovey M.I., Zarik A.V. Peculiarities of the dispersion of electro- and piezo-optic coefficients of silver thiogallate. Ukr.Fiz.Zhurn., 1982, v.27, N4, p.595-598.
  63. Vlokh O.G., Stasyuk I.V., Korobiy Yu.S., Kocur S.S., Lazko L.A., Shopa Ya.I. On the dispersion and temperature dependencies of the lead germanate and molybdate type crystals. Izv. AN SSSR, ser.phys., 1983, v.47, N4, p.665-668.
  64. Vlokh O.G., Kityk A.V., Kityk I.V., Polovinko I.I., Temperature dependence of birefringence and dielectric permittivity of the {N(CH3)4}2ZnCl4 crystals. Ukr.Fiz.Zhurn., 1983, v.28, N7, p.1099-1100.
  65. Vlokh O.G., Zarik A.V., Nekrasova I.M. (1983), On the electro-gyration in AgGaS2 and CdGa2S4 crystals. Ukr.Fiz.Zhurn., 28(9), 1334-1338.
  66. Vlokh O.G., Zheludev I.S. Electro- and magneto-gyration.  Contributions to Crystallography. - Sivaraj Ramaseshan's 60th Birthday Volume. Indian Academy of Sciences. Bangalore 560 080, 1983, p.131-137.
  67. Vlokh O.G., Zheludev I.S. Electro- and magneto-gyration. Proc. Indian. Acad. Sci. (Chem. Sci.), V.92, N4 & 5, August & October 1983, p.421-427.
  68. Vlokh O.G., Zheludev I.S., Sergatyuk V.A. Electro- and magneto-gyration in crystals. Izv. AN SSSR, ser.phys., 1984, v.48, N9, p.1771-1776.
  69. Vlokh O.G., Nosenko A.E., Gamernyk R.V., Biluy A.I. Determination of the electro-optic coefficients in the  Ca3Ga2Ge4O14 crystals. Kristallografiya, 1984, v.29, v.4, p.800-801.
  70. Vlokh O.G., Kityk A.V., Polovinko I.I. Birefringence anomalies in the K2ZnCl4 and [N(CH3)4]2ZnCl4 crystals in incommensurate phase. Kristallografiya, 1984, v.29, N6, p.1198-1200.
  71. Vlokh O.G., Kityk A.V., Polovinko I.I. Optical activity in the K2ZnCl4 crystals. Ukr.Fiz.Zhurn., 1984, v.29, N9, p.1410-1412.
  72. Berezhnyy I.V., Vlokh O.G., Vlokh R.O., Lazko L.A., Pozdeev V.G. Refraction and gyrotropy properties of the K2Cd2(SO4)3 crystals. Phys.Sol.Stat., 1984, v.26, N12, p.3690-3692.
  73. Vlokh O.G., Lazko L.A. Optical properties of the K2Cd2(SO4)3 ferroelastics. Ferroelectrics, 1984, V.56, p.103-106.
  74. Vlokh O.G., Zheludev I.S. Magneto-gyration in ferroelectric crystals. Ferroelectrics, 1984, V56, p.107.
  75. Vlokh O.G., Kityk A.V., Polovinko I.I. Peculiarities of the birefringence and optical activity effects in K2ZnCl4 crystals. Kristallografiya, 1985, v.30, N6, p.1194-1196.
  76. Vlokh O.G., Kityk A.V., Polovinko I.I. Piezo-optic effect in K2ZnCl4 and [N(CH3)4]2ZnCl4 crystals.  Ukr.Fiz.Zhurn., 1985, v.30, N2, p.216-218.
  77. Vlokh O.G., Graboskiy V.A., Nekrasova I.M. Effect of the optical activity on the absorption properties of AgGa1-xInxS2 crystals. Phys.Sol.Stat., 1985, v.27, N5, p.1300-1306.
  78. Vlokh O.G., Kityk A.V., Polovinko I.I. Peculiarities of the birefringence and optical activity effects in K2ZnCl4 crystals. Phys.Sol.Stat., 1985, v.27, N5, p.1581-1583.
  79. Vlokh O.G., Kaminskiy B.V., Kityk A.V., Polovinko I.I. Thermal memory effect in the crystal of the á2÷è4 group. Phys.Sol.Stat., 1985, v.27, N11, p.3436-3438.
  80. Zheludev I.S., O.G.Vlokh, Sergatyuk V.A. Magneto-gyration and other phenomena described by second-rank axial tensors. Ferroelectrics, 1985, V63, p.97-105.
  81. Vlokh O.G., Sergatyuk V.A. Magneto-polarization pseudo-gyration. Dokl. AN SSSR, 1986, v.291, N4, p.832-835.
  82. Vlokh O.G., Klepach M.I., Shopa Ya.I. Measurement of the optical activity in KDP type crystals at phase transition. Kristallografiya, 1986, v.31, N1, p.195-197.
  83. Vlokh O.G., Grabovkiy V.A. Peculiarities of the transmissions of gyrotropy crystals in the vicinity of the birefringence inversion point. Opt.Spectr., 1986, v.61, N6, p.1248-1253.
  84. Vlokh O.G., Kityk A.V., Polovinko I.I. Influence of the axial pressure and Rb+ impurities on the birefringence and domain structure of (NH4)2ZnCl4 crystals. Ukr.Fiz.Zhurn., 1986, v.31, N7, p.1051-1054.
  85. Vlokh O.G., Klepach M.I., Kushnir O.S., Shopa Ya.I. Study of the phase transitions in KDP group crystals by the electro-gyration method. Ukr.Fiz.Zhurn., 1986, v.31, N8, p.1228-1232.
  86. Vlokh O.G., Kityk A.V., Polovinko I.I., Sveleba S.A. Thermal memory effect in the incommensurate phase of K2ZnCl4 crystals. Ukr.Fiz.Zhurn., 1986, v.31, N9, p.1389-1391.
  87. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A. Kinetic phenomena’s in the incommensurate phase of K2ZnCl4 crystals. Phys.Sol.Stat., 1986, v.28, N7, p.2193-2195.
  88. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A. Anomaly thermal hysteresis loop in K2ZnCl4 crystals. Phys.Sol.Stat., 1986, v.28, N9, p.2911-2914.
  89. Vlokh O.G., Klepatch M.I., and Shopa Y.I. Study of electro-gyration in KDP-type ferroelectrics. Ferroelectrics, 1986, v.69, p.267-274.
  90. Vlokh O.G., Sergatyuk V.A. Magneto-polarization optical activity in crystals of the lead germanate type. Izv. AN SSSR, ser.phys., 1987, v.51, N12, p.2183-2185.
  91. Berezhnoy I.V., Vlokh O.G., Shopa Ya.I. Gyrotropy properties of the ammonium Rochelle salt. Izv. AN SSSR, ser.phys., 1987, v.51, N12, p.2186-2189.
  92. Vlokh O.G., Kityk A.V., Polovinko I.I. Piezo-optic effect and optical activity of Rb2ZnCl4 crystals. Kristallografiya, 1987, v.32, N1, p.140-142.
  93. Vlokh O.G., Kityk A.V., Polovinko I.I. Peculiarities of the birefringence sign inversion point in {N(CH3)4}2ZnCl4 crystals. Opt.Spectr., 1987, v.62, N1, p.221-222.
  94. Vlokh O.G., Kaminskiy B.V., Polovinko I.I. Optical birefringence of the Ba2NaNb5O15 crystals in the incommensurate phase. Ukr.Fiz.Zhurn., 1987, v.32, N2, p.193-195.
  95. Vlokh O.G., Vlokh R.O., Shopa Ya.I. Optical activity and birefringence of the K2Cd2(SO4)3 crystals. Ukr.Fiz.Zhurn., 1987, v.32, N7, p.1040-1042.
  96. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A. Anomaly thermal hysteresis loop in {N(CH3)4}2ZnCl4 crystals. Ukr.Fiz.Zhurn., 1987, v.32, N10, p.1546-1550.
  97. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A. Kinetic phenomena’s at the meta-stable state of K2ZnCl4 crystals. Phys.Sol.Stat., 1987, v.29, N5, p.1536-1538.
  98. Vlokh O.G., Kaminskiy B.V., Kityk A.V., Polovinko I.I., Sveleba S.A. Thermal memory effect and kinetic phenomena’s in the incommensurate phase of á2÷è4 crystal group. Phys.Sol.Stat., 1987, v.29, N7, p.2215-2217.
  99. Vlokh O.G. Electro-gyration properties of crystals. Ferroelectrics, 1987, V.67, p.119-137.
  100. Berezhnoy I.V., Vlokh O.G., Shopa Ya.I. Gyrotropy properties of NaNH4-tartrat tetra hydrate crystals. Kristallografiya, 1988, v.33, N4, p.1030-1031.
  101. Vlokh O.G., Grabovskiy V.A. Temperature dependence of the optical rotation of silver thiogallate. Opt.Spectr., 1988, v.64, N6, p.1307-1312.
  102. Vlokh O.G., Polovinko I.I., Sveleba S.A. Optical absorption of the incommensurate (N(CH3)4)2CuCl4 crystals. Opt.Spectr., 1988, v.65, N6, p.1272-1275.
  103. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A. Optical study of the incommensurate phase of Cs2CdBr4 crystals. Ukr.Fiz.Zhurn., 1988, v.33, N5, p.708-713.
  104. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A. Nonlinear piezo-optical properties of the (NH4)2BeF4 crystals in the incommensurate phase. Ukr.Fiz.Zhurn., 1988, v.33, N11, p.1644-1646.
  105. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A., Khalakhan A.Yu., Bogdanova A.V., Petrov V.V. Phase diagram and piezo-optic effect in Cs2HgBr4 crystals. Phys.Sol.Stat., 1988, v.30, N6, p.1907-1908.
  106. Vlokh O.G., Kityk A.V., Grybik V.G., Mokryy O.V. Studying of the ò,ô-diagram of {N(CH3)4}2CuCl4 crystals by the optical birefringence method. Phys.Sol.Stat., 1988, v.30, N8, p.2554-2556.
  107. Vlokh O.G., Sergatyuk V.A. Pseudo-gyration effects in the lead germanate type ferroelectrics. Ferroelectrics, 1988, V.80, p.313-316.
  108. Vlokh O.G., Kapustyanyk V.B., Polovinko I.I., Sveleba S.A., Varikash V.M., Andreev E.F. Optical properties of NH2(CH3)2Al(SO4)2 - new ferroelectric crystals. J.Appl.Spectr., 1989, v.51, N5, p.854-856.
  109. Vlokh O.G., Esayan S.Kh., Kityk A.V., Mokryy O.M. Influence of hydrostatic pressure on elastic properties of {N(CH3)4}2ZnCl4 crystals,  Izv. AN SSSR, ser.phys.,  1989, v.53, N7, p.1364-1368.
  110. Vlokh O.G., Kapustyanik V.B., Polovinko I.I., Sveleba S.A. Influence of the axial stress on the phase transitions of [N(CH3)4]2BX4 (B=Cu, Zn, Mn; X=Cl, Br) crystals. Izv. AN SSSR, ser.phys., 1989, v.53, N7, p.1369-1372.
  111. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A. Electro-optic and piezo-optic properties of Rb2ZnBr4 crystals, Kristallografiya, 1989, v.34, N1, p.249-251.
  112. Vlokh O.G., Vlokh R.O. Symmetry aspects of optical activity effects. Opt.Spectr.,  1989, v.66, N1, p.225-227.
  113. Vlokh O.G., Kaminskiy B.V., Polovinko I.I., Sveleba S.A., Bogdanova A.V., Khalakhan A.Yu., Petrov V.V. Optical study of the phase transitions in Cs2HgBr4 crystals. Ukr.Fiz.Zhurn., 1989, v.34, N5, p.660-663.
  114. Vlokh O.G., Polovinko I.I., Sveleba S.A. Optical study of the phase transitions in the incommensurate {N(CH3)4}2CoCl4 crystals. Ukr.Fiz.Zhurn., 1989, v.34, N5, p.673-677.
  115. Vlokh O.G., Polovinko I.I., Sveleba S.A. Piezo-optic properties of the {N(CH3)4}2CuCl4 crystals. Ukr.Fiz.Zhurn., 1989, v.34, N6, p.868-872.
  116. Vlokh O.G., Kapustyanik V.B., Polovinko I.I., Sveleba S.A., Varikash V.M., Bobrova Z.A. Birefringence and piezo-optic properties of  [(CH3)2NH2]2ZnCl4 in the range of phase transitions. Ukr.Fiz.Zhurn., 1989, v.34, N10, p.1595.
  117. Vlokh O.G., Polovinko I.I., Sveleba S.A. Thermal memory effects manifestation in the absorption spectrums of {N(CH3)4}2CoCl4 crystals. Phys.Sol.Stat., 1989, v.31, N2, p.277-280.
  118. Vlokh O.G., Kityk A.V., Mokryy O.M., Kirilenko V.V., Oleksyuk I.D., Piroga S.A. Study of ò,ô-diagram of the incommensurate Cs2HgBr4 ferroelastics by optical birefringence method. Phys.Sol.Stat.,1989, v.31, N5, p.312-314.
  119. Vlokh O.G., Varikash V.M., Bobrova Z.A., Kapustyanik V.B., Polovinko I.I., Sveleba S.A. Birefringence and electro-optic properties of (NH2(CH3)2)2CuCl4 crystals. Phys.Sol.Stat., 1989, v.31, N7, p.264-268.
  120. Vlokh O.G., Kaminskaya E.P., Kityk A.V., Levanyuk A.P., Mokryy O.M. Theory of the Cs2HgBr4 É Cs2CdBr4 phase diagram: unusual Lifshitz point. Phys.Sol.Stat., 1989, v.31, N9, p.267-268.
  121. Vlokh O.G., Polovinko I.I., Sveleba S.A., Kityk A.V., Mokryy O.M. Parametrical optic effects in the incommensurate phase of A2BX4 crystals. Ferroelectrics, 1989, V.94, p.425.
  122. Vlokh O.G., Kityk A.V., Mokryy O.M., Grybyk V.G. Pressure-temperature phase diagram of (N(CH3)4)2CuCl4 crystals. Birefringence and elastic properties. Phys. Stat. Sol.(a), 1989, v.116, p.287-293.
  123. Vlokh O.G., Kapustyanik V.B., Polovinko I.I., Sveleba S.A., Varikash V.M., Andreev E.F., Shuvalov L.A. Optical properties of new [NH2(CH3)2]2CuCl4 and NH2(CH3)2Al(SO4)2.6H2O ferroelectrics. Izv. AN SSSR, ser.phys., 1990, v.54, N6, p.1143-1146.
  124. Vlokh O.G., Mokryy V.I., Polovinko I.I., Sveleba S.A. Absorption specta of  (N(CH3)4)2BCl4 (B - Mn, Cu, Co) crystals and their aqua solutions. J.Appl.Spectr., 1990, v.52, N4, p.675-677.
  125. Vlokh O.G., Kapustyanik V.B., Polovinko I.I., Sveleba S.A., Varikash V.M., Bobrova Z.A. Optical properties of [NH2(CH3)2]2ZnCl4 in the range of phase transitions. J.Appl.Spectr., 1990, v.52, N5, p.785-790.
  126. Vlokh O.G., Ducyak G.Z., Kityk A.V., Kityk I.V. Manifestation of the 3d- cooper terms in optical spectra of tetra chlorine cooperate tetra methyl ammonium crystals. J.Appl.Spectr., 1990. v.53, N1, p.87-90.
  127. Vlokh O.G., Kityk A.V., Mokryy O.M., Kaminskiy B.V., Grybik V.G. Phase P,T-diagram of the incommensurate Cs2CdBr4 ferroelastics. Kristallografiya, 1990, v.35, v1, p.226-228.
  128. Vlokh O.G., Polovinko I.I., Sveleba S.A. Optical birefringence of (N(CH3)4)2ZnBr4 crystals in axial mechanical stress field. Kristallografiya, 1990, v.35, N3, p.780-782.
  129. Vlokh O.G., Kityk A.V., Mokryy O.M. Elastic properties and phase P,T-diagram of the {N(CH3)4}2óÏCl4 crystals. Kristallografiya, 1990, v.35, N4, p.894-899.
  130. Vlokh O.G., Kityk A.V., Mokryy O.M. Phase P,T-diagram of {N(CH3)4}2óuCl4-xBrx. Kristallografiya, 1990, v.35, N4, p.1012-1013.
  131. Vlokh O.G., Grybyk V.G., Kityk A.V., Mokryy O.M., Oleksyuk I.D., Piroga S.A. Optical and acoustical study of the consequent phase transitions in Cs2HgCl4 crystals. Kristallografiya, 1990, v.35, N6, p.1483-1487.
  132. Vlokh O.G., Vlokh R.O. On the interpretation of the nontrivial optical activity in magnetic field. Opt.Spectr, 1990, v.69, N2, p.458-459.
  133. Vlokh O.G., Mokryy O.M., Polovinko I.I., Sveleba S.A. Spectral properties of the  (N(C2H5)4)2CdBr4 crystals. Opt.Spectr., 1990, v.69, N5, p.1189-1191.
  134. Vlokh O.G., Nastishin Yu.A., Polovinko I.I., Sveleba S.A. Manifestation of the incommensurate in the optical properties of the blue liquid crystal phases. Tech.Phys.Lett., 1990, v.16, N7, p.29-33.
  135. Vlokh O.G., Bublik M.I., Polovinko I.I., Olkhova O.M., Sveleba S.A., Sosnovskiy T.M. Optical properties of new [NH2(C2H5)2]2CuCl4 É [NH2(C2H5)2]2CoCl4 ferroelastic crystals.  Tech.Phys.Lett., 1990, v.16, N15, p.23-25.
  136. Vlokh O.G., Zhmurko V.S., Polovinko I.I., Sveleba S.A. Change of the birefringence behaviour in the incommensurate phase of (N(CH3)4)2CuCl4 crystals under the X-ray radiation influence.  Tech.Phys.Lett., 1990, v.16, N23, p.39-43.
  137. Brezhnoy I.V., Vlokh O.G., Krupych O.M., Gyrotropy of the deuterium doped Rochelle salt crystals. Ukr.Fiz.Zhurn.,  1990, v.35, N1, p.41-44.
  138. Vlokh O.G.,  Polovinko I.I., Sveleba S.A. Optical absorption of the incommensurate (N(CH3)4)2ZnCl4 crystals. Ukr.Fiz.Zhurn., 1990, v.35, N1, p.49-51.
  139. Vlokh O.G., Kapustyanyk V.B., Polovinko I.I., Sveleba S.A. Optical birefringence and phase transitions in (N(CH3)4)2CdCl4 crystals. Ukr.Fiz.Zhurn.,  1990, v.35, N1, p.54-56.
  140. Vlokh O.G.,  Polovinko I.I., Mokryy O.M., Sveleba S.A. Birefringence and piezo-optic properties of the (N(CH3)4)2FeCl4 crystals. Ukr.Fiz.Zhurn., 1990, v.35, N3, p.349-352.
  141. Vlokh O.G., Polovinko I.I., Sveleba S.A., Kityk A.V., Mokryy O.M., Grybik V.G. Influence of hydrostatic and axial pressure on the birefringence of (N(CH3)4)2ZnCl4 crystals in the range of phase transition. Ukr.Fiz.Zhurn., 1990, v.35, N4, p.520-525.
  142. Vlokh O.G., Kushnir O.S., Shopa Ya.I. Light polarization characteristics at the propagation through elliptically birefringence crystals. Ukr.Fiz.Zhurn., 1990, v.35, N5, p.664-667.
  143. Vlokh O.G., Kityk A.V., Mokryy O.M., Grybik V.G. Elastic properties of  Cs2CdBr4 ferroelastics in the vicinity of incommensurate phase transitions. Ukr.Fiz.Zhurn., 1990, v.35, N7, p.1093-1096.
  144. Vlokh O.G., Olkhova O.M., Polovinko I.I., Sveleba S.A., Sosnovskiy T.M. Study of the phase transitions in the  [NH2(C2H5)2]ZnCl4 and [NH2(C2H5)2]2CoCl4 new ferroelastics. Ukr.Fiz.Zhurn., 1990, v.35, N9, p.1330-1332.
  145. Vlokh O.G., Zhmurko V.S., Polovinko I.I., Sveleba S.A. Effect of Ni2+ ion substitution on the birefringence of (N(CH3)4)2ZnCl4. incommensurate crystals. Ukr.Fiz.Zhurn., 1990, v.35, N10, p.1493-1494.
  146. Vlokh O.G., Zhmurko V.S., Polovinko I.I., Sveleba S.A. Effect of the X-ray radiation on the birefringence properties of (N(CH3)4)2MnCl4 crystals in the incommensurate phase. Ukr.Fiz.Zhurn., 1990, v.35, N11, p.1651-1652.
  147. Vlokh O.G., Kapustyanik V.B., Mokryy O.M., Polovinko I.I., Sveleba S.A. Phase transitions in new (N(C2H5)4)2ZnBr4 crystals.  Ukr.Fiz.Zhurn., 1990, v.35, N12, p.1854-1856.
  148. Vlokh O.G., Kityk A.V., Mokryy O.M. Birefringence and elastic properties of {N(CH3)4}2MnCl4 crystals in the range of phase transitions. Phys.Sol.Stat., 1990, v.32, N4, p.1044-1051.
  149. Vlokh O.G., Kityk A.V., Mokryy O.M., Grybik V.G. P,T- Phase diagram of the proper incommensurate Cs2CdBr4 ferroelastics: elastic properties. Phys.Sol.Stat., 1990, v.32, N5, p.1556-1560.
  150. Vlokh O.G., Kityk A.V., Mokryy O.M. Effect of the hydrostatic pressure on the ultrasonic waves attenuation anomalies in the incommensurate phase of {N(CH3)4}2XCl4 (X = Zn, Mn) crystals. Phys.Sol.Stat., 1990, v.32, N9, p.2558-2562.
  151. Vlokh O.G., Kapustyanik V.B., Polovinko I.I., Sveleba S.A., Andreev E.F., Varikash V.M., Shuvalov L.A. Birefringence and piezo-optic properties of NH2(CH3)2Al(SO4)2.6H2O crystals. Phys.Sol.Stat., 1990, v.32, N10, p.2881-2884.
  152. Vlokh O.G., Kityk A.V., Mokryy O.M. Study of the ò,ô-phase diagram of {N(CH3)4}2CoCl4 crystals by the optical birefringence method. Phys.Sol.Stat., 1990, v.32, N11, p.3409-3411.
  153. Vlokh R.O., Vlokh O.G., Pyatak J.A., Skab I.P. Acousto-gyration diffraction of light. Ferroelectrics, 1990, v.110, p.1117-1121.
  154. Vlokh O.G., Polovinko I.I. and S.A.Sveleba. Domain structure and birefringence in incommensurate (N(CH3)4)2ZnCl4 crystals.  Ferroelectrics, 1990, v.111, p.267-270.
  155. Vlokh O. G.,  Kapustianik V. B.,  Polovinko I. I.,  Sveleba S. A.  Andreyev E. F., Varikash V. M., Shuvalov L. A. Influence of domain structure on electro- and piezo-optic properties of NH2(CH3)2Al(SO4)2.6H2O crystals. Ferroelectrics, 1990, v.111, p.333-337.
  156. Vlokh O.G., Mokryy V.I., Polovinko I.I. and S.A.Sveleba. Optical absorption spectrums of  (N(C2H5)4)2ZnBr4 crystals. J. Appl.Spectr., 1991, v.54 N2, p.328-331.
  157. Vlokh O.G., Zhmurko V.S., Polovinko I.I. and S.A.Sveleba.Influence of the X-ray radiation on the birefringence of (N(CH3)4)2ZnCl4 crystals. Tech.Phys.Lett., 1991, v.61, N.5, p.128-130.
  158. Vlokh O.G., Kapustyanyk V.B., Mikhalyna I.A., Polovinko I.I., Sveleba S.A., Varikash V.M., Bobrova Z.A. Optical properties of the [NH2(CH3)2]2MnCl4.3,5H2O crystals. Izv. AN SSSR, ser.phys., 1991, v.55, N3, p.433-438.
  159. Vlokh O.G., Polovinko I.I. and S.A.Sveleba. Study of the absorption adge of {N(CH3)4}2ZnBr4 crystals. Kristallografiya, 1991, v.36, N1, p.224-226.
  160. Vlokh O.G., Mokryy V.I., Polovinko I.I. and S.A.Sveleba. Optical birefringence of the [N(C2H5)4]2ZnBr4 and [N(C2H5)4]2CdBr4 - single crystals. Kristallografiya, 1991, v.36, N1, p.227-228.
  161. Vlokh O.G., Zhmurko V.S., Polovinko I.I. and S.A.Sveleba. Phase diagrams of the incommensurate [N(CH3)4]2BCl4 (B=Cu, Mn, Zn) - crystals  in coordinates: temperature - X-ray radiation dose. Kristallografiya, 1991, v.36, N2, p.502-503.
  162. Vlokh O.G., Zhmurko V.S., Polovinko I.I., Mokryy V.I., Sveleba S.A. Commensurate phases in [N(CH3)4]2BCl4  (B = Zn; Co; Cu; Mn) crystals induced by defects. Kristallografiya, 1991. v.36, N3, p.769-771.
  163. Vlokh O.G., Bublyk M.I., Mokryy V.I., Polovinko I.I., Sveleba S.A., Sosnovskiy T.M. Effect of the isomorphic substitution on the phase transitions in A2BX4 (where A+ = (N(C2H5)4)+, (NH2(C2H5)2)+, B = Cu, Co, Zn, Cd,  X = Cl, Br) crystals. Kristallografiya, 1991, v.36, N4, p.913-918.
  164. Vlokh O.G., Kapustyanik V.B., Polovinko I.I., Mukhaylina I.A., Sveleba S.A., Andreev E.F., Varikash V.M., Shuvalov L.A. Spectral studying of the ferroelectrics NH2(CH3)2Al(SO4)2x6H2O crystals. Kristallografiya, 1991, v.36, N4, p.919-924.
  165. Vlokh O.G., Kapustyanik V.B., Mokryy O.M., Polovinko I.I.,Sveleba S.A., Andreev E.F., Varikash V.M., Shuvalov L.A. Linear electro-optic effect in the dimethyl - ammonium - aluminum sulphate crystal. Kristallografiya, 1991, v.36, N4, p.1030-1031.
  166. Vlokh O.G., Kityk A.V., Grybik V.G., Mokryy O.M. Acoustic study of the thermal memory effect in the incommensurate phase of {N(CH3)4}2CoCl4 and Cs2CdBr4 crystals. Kristallografiya, 1991, v.36, N5, p.1246-1249.
  167. Vlokh O.G., Zmurko V.S., Polovinko I.I., Sveleba S.A. On the manifestation of devil staircase in  [N(CH3)4]2FeCl4 crystals. Kristallografiya, 1991, v.36, N5, p.1315-1317.
  168. Vlokh O.G., Polovinko I.I., Sveleba S.A., Bublyk M.I., Sosnovskiy T.M. Ferroelastic properties of the (NH2(C2H5)2)2ZnCl4xH2O  crystals, Kristallografiya, 1991, v.36, N5, p.1320-1321..
  169. Vlokh O.G., Zmurko V.S., Polovinko I.I., Sveleba S.A. Axial mechanical stress influence on the incommensurate phase properties of Cs2CdBr4 crystals. Kristallografiya, 1991, v.36, N6, p.1574-1575.
  170. Vlokh O.G., Kityk A.V., Mokryy O.M., Kirilenko V.V., Oleksyuk I.D., Piroga S.A. Hydrostatic pressure influence on the elastic properties of Cs2HgBr4 crystals in the range of incommensurate phase transitions. Izv. AN SSSR, ser. inorganic mat., 1991, v.27, N8, p.1740-1743.
  171. Vlokh O.G., Ducyak G.Z., Kityk A.V., Kityk I.V. Band structure and optical spectrums of [N(CH3)4]2CoCl4 single crystals. Izv. AN SSSR, ser. inorganic mat., 1991, v.27, N10, p.2222-2223.
  172. Vlokh O.G., Polovinko I.I., Sveleba S.A., Bublyk M.I., Sosnovskiy T.M. Temperature evolution of the absorption edge of [NH2(C2H5)2]CuCl4 crystals. Opt.Spectr., 1991, v.71, N2, p.292-293.
  173. Vlokh O.G., Kushnir O.S., Shopa Ya.I. Gyrotropy of the laminated crystalline structures. Ukr.Fiz.Zhurn.,  1991, v.36, N5, p.682-686.
  174. Vlokh O.G., Zhmurko V.S., Polovinko I.I., Sveleba S.A. Axial stress influence on the properties of incommensurate phase in Cs2CdBr4 crystals. Ukr.Fiz.Zhurn., 1991, v.36, N7, p.1040-1042.
  175. Vlokh O.G., Varikash V.M., Bobrova Z.A., Polovinko I.I., Sveleba S.A., Bublyk M.I., Sosnovskiy T.M. Incommensurate phase in the new (N(CH3)4)2ZnI4 ferroelectrics. Ukr.Fiz.Zhurn., 1991, v.36, N8, p.1149-1150.
  176. Vlokh O.G., Kityk A.V., Mokryy O.M., Grybyk V.G. Acoustical study of the thermal memory effect and thermal hysteresis loop in the incommensurate phase of Cs2HgCl4,  Cs2CdBr4 crystals. Phys.Sol.Stat., 1991, v.33., N1, p.312-315.
  177. Kityk A.V.,  Mokryy O.M., Vlokh O.G. Electro-acoustic effect in {N(CH3)4}2ZnCl4 and {N(CH3)4}2CoCl4 crystals in the range of incommensurate-polar phase transition. Phys.Sol.Stat., 1991, v.33, N7, p.1952-1956.
  178. Kityk A.V.,  Mokryy O.M., Vlokh O.G. Influence of the hydrostatic pressure on the non-goldstone phason relaxation time temperature dependence in the incommensurate phase of {N(CH3)4}2XCl4 (X = Zn, Co, Mn) crystals. Phys.Sol.Stat., 1991, v.33, N8, p.2455-2457.
  179. Vlokh O. G., Zmurko V.S., Polovinko I.I., Sveleba S.A. Peculiarities of the birefringence behaviour of Cs2CdBr4 and Cs2HgBr4 crystals in the field of axial mechanical stress. Phys.Sol.Stat., 1991, v.33, N10, p.3109-3112.
  180. Vlokh O.G., Kapustyanik V.B.,  Polovinko I.I., Sveleba S.A., Varikash V.M., Bobrova Z.A. Absorption edge temperature dependence of dimethyl-ammonium - chlorine - cooperate ferroelectrics. J.Appl.Spectr., 1992, v.56, N1, p.86-89.
  181. Vlokh O. G., Zmurko V.S., Polovinko I.I., Sveleba S.A. Inducing of the commensurate phases by mechanical stress in the incommensurate ferroelastics. Izv. AN SSSR, ser.phys.,  1992, v.56, N10, p.44-47.
  182. Vlokh O.G., Bublyk M.I., Polovinlo I.I., Sveleba S.A. Birefringence properties of new [NH2(C2H5)2]2BCl4 and [NH2(C2H5)2]5B2Cl9 (B = Zn; Ni) ferroelectrics crystals. Izv. AN SSSR, ser.phys., 1992, v.56, N10, p.53-55.
  183. Vlokh O.G., Grabovskiy V.A., Nekrasova I.M. Axial stress effect on the optical activity of silver thiogallate. Kristallografiya, 1992, v.37, N1, p.220-222.
  184. Vlokh O. G., Zmurko V.S., Polovinko I.I., Sveleba S.A. Properties of the incommensurate phase of (N(CH3)4)2MnCl4 crystals in the field of axial stresses  . Kristallografiya, 1992, v.37, N2, p.525-528.
  185. Vlokh O.G., Kushnir O.S., Shopa Ya.I. Accounting of polarizers imperfection at the optical activity of crystals study. Kristallografiya, 1992, v.37, N2, p.529-530.
  186. Vlokh O.G., Mikhalyna I.A., Polovinko S.A., Sveleba S.A., Bobrova Z.A., Varikash VM. Optical-spectral properties of  [NH2(CH3)2]2CoCl4 crystals in the range of phase transitions. Kristallografiya, 1992, v.37, N3, p.766-771.
  187. Vlokh O.G., Nastishin Yu.A., Sosnovskiy T.M. New peculiarities of the liquid crystals blue phases. Tech.Phys.Lett., 1992, v.18, N9, p.43-48.
  188. Vlokh O.G., Kityk A.V., Sopronyuk V.P., Mokryy O.M. Electro-acoustical properties of {N(CH3)4}2XCl4 (X=Zn, Co, Fe) crystals in the range of phase transitions. Ukr.Fiz.Zhurn., 1992, v.37, N2, p.275-280.
  189. Vlokh O.G., Kapustyanik V.B., Mikhalyna I.A., Polovinko S.A., Sveleba S.A., Bobrova Z.A., Varikash VM. Optical-spectral properties of  (NH2(CH3)2)2CdCl4 crystals in the range of their phase transitions. Ukr.Fiz.Zhurn., 1992, v.37, N3, p.341-345.
  190. Vlokh O.G., Zhmurko V.S., Polovinko I.I., Sveleba S.A. Mechanical stress influence on the birefringence properties of (N(CH3)4)2ZnCl4 crystals. Ukr.Fiz.Zhurn., 1992, v.37, N6, p.830-832.
  191. Kityk A.V., Sopronyuk V.P., Vlokh O.G., Oleksyuk I.D., Piroga S.A. P,T - phase diagram of the incommensurate ós2HgCl4 ferroelastics. Ukr.Fiz.Zhurn., 1992, v.37, N7, p.1082-1086.
  192. Vlokh O.G., Bublyk M.I., Zhmurko V.S., Polovinko I.I., Sveleba S.A. Peculiarities of the   - and   -diagrams of (N(CH3)4)2FeCl4 crystals. Ukr.Fiz.Zhurn., 1992, v.37, N9, p.1390-1394.
  193. Vlokh O.G., Kityk A.V., Sopronyuk V.P., Influence of hydrostatic pressure on the elastic properties of {N(CH3)4}2FeCl4 crystals in the range of phase transitions. Phys.Sol.Stat., 1992, v.34, N2, p.513-519.
  194. Kityk A.V., Sopronyuk V.P., Vlokh O.G., Oleksyuk V.P., Piroga S.A. Acoustical studying of the ò,ô- diagram of Cs2HgCl4  crystals. Phys.Sol.Stat., 1992, v.34, N7, p.2044-2052.
  195. Vlokh O.G., Kushnir O.S. and Shopa Y.I. Study of the optical activity of ferroelectrics lead germanate. Acta Physica Polonica A., 1992, v.81, N4-5, p.571-578.
  196. Kapustianik V.B., Polovinko I.I., Sveleba S.A., Vlokh O.G. and V.S.Zhmurko. New effect in incommensurate phase of X-Ray-irradiated {N(CH3)4}2CuCl4 and {N(CH3)4}2ZnCl4 crystals. Europhys.Lett., 1992, 19(5), p.429-432.
  197. Orest Vlokh, Volodymyr Kapustianik, Igor Polovinko, Sergiy Sveleba, Zoya Bobrova and Vikkentiy Varikash. Manifestation of phase transitions in the optical and spectral properties of (NH2(CH3)2)2MeCl4 (Me = Cu, Co, Zn, Mn, Cd) crystals. Ferroelectrics, 1992, v.125, p.183-189 [609-615].
  198.  Orest Vlokh, Oleg Kushnir and Yaroslav Shopa. Gyrotropic properties of Pb5Ge3O11 ferroelectrics crystals. Ferroelectrics, 1992, v.126, p.97-102 [1045-1050].
  199. Orest Vlokh, Igor Polovinko, Sergiy Sveleba, Volodymyr Zhmurko and Volodymyr Kapustyanik. Manifestation of interaction of incommensurate modulated structure with defects in the birefringence properties of (N(CH3)4)2FeCl4 crystals. Ferroelectrics, 1992, v.132, p.285-291.
  200. Vlokh O.G., Kityk A.V., and V.P.Soprunyuk. Influence of hydrostatic pressure on the elastic properties of {N(CH3)4}2FeCl4 crystals near phase transitions. Phys.Sol.Stat., 1992, v.34, N2, p.274-278.
  201. Vlokh O.G., Polovinko I.I., Sveleba S.A., Zhmurko V.S., Bublyk M.I. Birefringence and phase diagrams of (N(CH3)4)2CuCl4 crystals at mechanical   and   stresses action. J.Tech.Phys., 1993, v.63, N5, p.55-60.
  202. Vlokh O.G., Nastishin Yu.A., Sosnovskiy T.M. Defects influence on the physical properties of blue phase of liquid crystals. Kristallografiya, 1993, v.38, N6, p.280-282.
  203. Berezhnaya S.Yu., Berezhnoy I.V., Vlokh O.G. Optical tomography of the no homogeneous, weak anisotropy media.  Opt.Spectr., 1993, v.75, N5, p.1061-1064.
  204. Vlokh O.G., Kushnir O.S., Shopa Ya.I. On the optical activity of incommensurate (N(CH3)4)2ZnCl4 crystals. Ukr.Fiz.Zhurn, 1993, v.38, N6, p.869-871.
  205. Vlokh O.G., Kushnir O.S., Shopa Ya.I. Natural optical activity and birefringence of ferroelectrics triglycine sulphate crystals. Ukr.Fiz.Zhurn., 1993, v.38, N7, p.1027-1030.
  206. Vlokh O.G., Kityk A.V., Shchur Ya.Y., Lutsiv-Shumskyy L.P. Klymiv I.M. Acoustic and electro-acoustic properties of  CsD2PO4 crystals in the vicinity of phase transitions and triple point. Ukr.Fiz.Zhurn., 1993, v.38, N7, p.1081-1089.
  207. Kityk A.V., Sopronyuk V.P., Vlokh O.G. Incommensurate phase transitions in Rb2ZnBr4 crystals: 1. Acoustical and electro-acoustic properties. Phys.Sol.Stat., 1993, v.35, N6, p.1544-1552.
  208. Kityk A.V., Sopronyuk V.P., Vlokh O.G. Incommensurate phase transitions in Rb2ZnBr4 crystals: 2.Hydrostatic pressure influence on the temperature behaviour of elastic and birefringence properties. Phys.Sol.Stat.,   1993, v.35, N6, p.1553-1561.
  209. Kushnir O.S., Shopa Y.I. and Vlokh O.G. Optical study of incommensurately modulated {N(CH3)4}2ZnCl4 crystals.  Europhys. Lett., 1993, v.22, N5, p.389-393.
  210. Kushnir O.S., Shopa Y.I. and Vlokh O.G.  Gyrotropic and birefringence properties of ferroelectrics TGS. Ferroelectrics, 1993, v.143, p.187-193.
  211. Kityk A.V., Soprunyuk V.P. and Vlokh O.G. The pressure-temperature phase diagram of {N(CH3)4}2FeCl4 crystals: birefringence, elastic and electro-acoustic properties. J. Phys.: Cond.Matter. 1993, N5, p.235-246.
  212. Kushnir O.S., Shopa Y.I.,Vlokh O.G., Polovinko I.I. and S.A.Sveleba. The influence of annealing and x-irradiation on the optical anisotropy in incommensurate (N(óH3)4)2ZnCl4. J. Phys.: Cond.Matter. 1993, N5 p.4759-4766.
  213. Kityk A.V., Mokry O.M., Soprunyuk V.P. and O.G.Vlokh. Optical birefringence and acoustic properties near the phase transitions and triple point in incommensurate proper ferroelastics Cs2HgBr4, Cs2CdBr4 and Cs2HgCl4 crystals. J. Phys.: Cond.Matter., 1993, N5, p.5189-5200.
  214. Kushnir O.S. and O.G. Vlokh. Peculiarity of crystallooptic properties in real modulated phases. J. Phys.: Cond.Matter., 1993, N5, p.7017-7032.
  215. Kityk A.V., Soprunyuk V.P., Vlokh O.G., Sveleba S.A. and Z.Czapla. The incomplete devil's staircase of betaine calcium chloride dihydrate: acoustic investigation at high pressures. J. Phys.: Cond.Matter., 1993, N5, p.7415-7424.
  216. Kityk A.V., Soprunyuk V.P., and O.G.Vlokh. Acoustic investigations of the pressure-temperature phase diagram of Rb2ZnCl4 Crystals. Phys. Stat. Sol. (a), 1993, v.138, p.119-131.
  217. Kityk A.V., Shchur Y.I. Vlokh O.G., Klymiv I.M. On the hydrostatic pressure influence on the elastic properties of RbD2PO4 monoclinic crystals. Phys.Sol.Stat., 1994, v.36, N4, p.981-988.
  218. Vlokh O.G., Shchur Y.I., Gyrnik I.S., Klymiv I.M. On the thermal expansion of RbD2PO4, Csî2PO4 and CsD2PO4 crystals. Phys.Sol.Stat., 1994, v.36, N10, p.2890- 2895.
  219. Kityk A.V., Vlokh O.G., Zadorozhna A.V., Z.Czapla. On the pressure-temperature phase diagram of NH4HSeO4 crystal: acoustical treatment.  Ferroelectrics Lett.,1994, v.17,  p.1-4.
  220. Kityk A.V., Shchur Ya.I., Lutsiv-Shumskiy L.P.and O.G.Vlokh. On the acoustic properties of CsD2PO4 and RbD2PO4 crystals near phase transitions under hydrostatic pressure. J.Phys.: Cond.Matter., 1994, N6, p.699-712.
  221. Shchur Ya.I., Dzhala V.I., Vlokh O.G., and Klymiv I.M. Temperature dependence of the Raman scattering spectra in monoclinic RbD2PO4 crystals.  Phys.Stat.Sol. (a), 1994, N144,  p.K17-K22.
  222. Vlokh O.G., Kushnir O.S. Character of the light eigenwaves in weak absorption crystals with the modulated dielectric parameters. Kristallografiya, 1995, v.40, N5, p.779-782.
  223. Kostruba A.M., Vlokh O.G., Petrov V.V. Optimum ellipsometric experiment conditions at the essentially non-ideal compensator using. Ukr.Fiz.Zhurn., 1995, v.40, N3, p.186-191.
  224. Vlokh O.G., Kushnir O.S. Peculiarities of polarized light propagation in the pure dichroic crystals. Opt.Spectr., 1996, v.80, N1, p.82-84.
  225. Kostruba A.M, Vlokh O.G. Complex method of three parameters determination of the absorption thin films. Opt.Spectr., 1996, v.80, N6, p.920-924.
  226. Berezhnaya S.Yu., Berezhnoi I.V., and Vlokh O.G. The use of the HAUP Method in optical tomography of anisotropic medium. Opt.Spectr., 1996, v.81, N5, p.776-778.
  227. Kushnir O.S., Vlokh O.G. Elimination of systematic polarimetric errors in HAUP-type crystallooptical study of ferroelectrics. Ferroelectrics, 1997, v.192, N1-4, p.243-248.
  228. Kushnir O.S., Vlokh O.G. Interpretation of optical activity in incommensurate structures using Jones calculus. Ferroelectrics, 1997, v.203, p.95-100.
  229. Vlokh O., Shopa Y. and M.Kravchuk. Measurements of the optical activity in Cd2(MoO4)3 using polarimetric technique related to HAUP.  Ferroelectrics, 1997, v.203, p107-111.
  230. Shchur Y.I., Kityk A.V., Trach I.B., Vlokh O.G. Peculiarities of low frequency lattice dynamic of Cs2HgCl4 crystals. Ukr.Fiz.Zhurn., 1998, v.43, N8, p.960-965.
  231. Kityk A.V., Zadorozhna A.V., Shchur Ya.I., Martynyuk-Lototska I.Yu., Burak Ya.and Vlokh O.G. Elastic Properties of Cs2HgBr4 and Cs2CdBr4 Crystals.  Australian Journal of Physics, 1998, N51, p.943-957.
  232. Vlokh O.G. Parametric crystal optics of nonmagnetic ferroics.  Condensed Matter Physics. 1998, v.1, N2(14) p.339-356.
  233. Kityk A.V., Shchur Ya.I., Zadorozhna A.V., Trach I.B., Girnyk I.S., Martynyuk-Lototska I.Yu. and Vlokh O.G. Pressure-induced ferroelastic instability and lattice dynamics of Cs2HgCl4 crystals within the semi empirical rigid-ion model. Physical Review (B), 1998, v.58, N5, p.2505-2512.
  234. Kityk A.V., Zadorozhna A.V., Shchur Ya.I., Martynyuk-Lototska I.Yu.and Vlokh O.G. Lattice instability of Cs2HgCl4 crystals.  I. Elastic properties. Phys.Stat.Sol. (b), 1998, N210,  p.35-45.
  235. Shchur Ya.I., Levitskii R.R., Vlokh O.G., Kityk A.V., Vysochansky Y.M., Grabar A.A. Lattice dynamics of a monoclinic CsH2PO4 crystal. Condensed Matter Physics, 1999, v2, N1(17), p.93-108.
  236. Kityk A.V., Shchur Ya.I., Zadorozhna A.V., Trach I.B., Girnyk I.S., Martynyuk-Lototska I.Yu., and Vlokh O.G. Lattice instability of Cs2HgCl4 crystals.  II. Ferroelastic instability and lattice dynamics within the semiempirical rigid-ion model.  Phys.Stat.Sol. (b), 1999, N211, p.631-640.
  237. Vlokh O.G., Mytsyk B.G., Andrushchak A.S., Pryris Ya.V. Spatial distribution of piezoinduced change in the optical retardation in lithium niobate crystals. Cryst.Report, 2000, v.45, N1, p.138-144.
  238. Vlokh R., Vlokh O., Kityk A., Skab I., Girnyk I., Czapla Z., Kosturek B. and Dacko S.The Isolated point on the concentration-temperature phase diagram of K2Cd2xMn2(1-x)(SO4)3 crystals. Ferroelectrics, 2000, v.237, N1-4, p.481-487.
  239. Vlokh O.G. Optical properties of crystals with incommensurate structure of Lifshitz’s type. Ukr.J.Phys.Opt., 2000, v1, N1, p.1-12.
  240. Krupych O.M., Vlokh R.O., Vlokh O.G.. The studies of domain structure in ferroics by imaging polarimetry. The case of Rochelle salt. Ukr.J.Phys.Opt., 2000, v1, N1, p.35-39.
  241. Kushnir O.S., Bevz O.A., Vlokh O.G. High-accuracy determination for optical indicatrix rotation in ferroelectrics DTGS.  Ukr.J.Phys.Opt., 2000, v1,N1, p.43-45.
  242. Vlokh O.G. The historical background of the finding of electro-gyration. Ukr.J.Phys.Opt., 2001, v.2,N2, p.53-57.
  243. Vlokh R., Marsel L., Teslyuk I., Vlokh O.G. Growth and optical microscopy observation of the lysozyme crystals. Ukr.J.Phys.Opt., 2001, v.2, N2, p.84-85.
  244. Nastishin Yu.A., Dovgyi O.B., Vlokh O.G.. Optical conoscopy of distorted uniaxial liquid crystals: computer simulation and experiment.  Ukr.J.Phys.Opt., 2001, v.2, N2, p.98-106.
  245. Kushnir O.S., Lutsiv-Shumskiy L.P., Polovinko I.I., Vlokh O.G. Measurements of optical gyration in incommensurate (N(CH3)4)2ZnCl4 crystals with the universal null-polarimeter. Ukr.J.Phys.Opt., 2001, v2, N3, p.126-132.
  246. Nastishin Yu.A., Vlokh O.G., Dovgyi O.B. Computer simulation of conoscopic pattern for gyrotropic birefringence crystals.  Ukr.J.Phys.Opt., 2001, v.2, N3, p.133-140.
  247. Shchur Ya.I., Trach I.B., Vlokh O.G. Peculiarities of internal vibrational modes of Cs2CdBr4 crystal. Ukr.J.Phys.Opt., 2001, v.2, N4, p.192-198.

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