1. Vibrational spectra of quercetin and their interpretation with quantum-mechanical density-functional method.
   Kutovyy S., Savchuk R., Bashmakova N., Stanovyi О. and Palchykivska L. 2021. Ukr.J.Phys.Opt. 22: 181 – 197.
   doi: 10.3116/16091833/22/4/181/2021


2. Implementation of optical quantum gate for polarization-encoded qubits via acousto-optic diffraction by shear acoustic waves in vitreous media.
   Krupych O., Martynyuk-Lototska I., Orykhivskyi I., Adamenko D., Kostyrko M. and Vlokh R.
   2021. Ukr.J.Phys.Opt. 22: 198 – 208. doi: 10.3116/16091833/22/4/198/2021


3. Polarized photoluminescence of Alq3 thin films obtained by the method of oblique-angle deposition.
   Karbovnyk I., Sadovyi B., Turko B., Kukhta A. V., Vasil’yev V. S., Horyn A., Kulyk Y., Eliyashevskyi Y., Kostruba A., Savaryn V., Stybel V. and Majevska S. 2021. Ukr.J.Phys.Opt. 22: 209 – 215.
   doi: 10.3116/16091833/22/4/209/2021


4. Temperature behaviour of fundamental absorption edge in superionic Ag₆PS₅I crystals.
   Studenyak I. P., Pop M. M., Shender I. O., Pogodin A. I. and Kranjcec M. 2021. Ukr.J.Phys.Opt. 22: 216 – 224.
   doi: 10.3116/16091833/22/4/216/2021


5. Low-light image restoration using discrete cosine transform and conditional generative adversarial network.
   Banglian Xu, Yao Fang, Zhixiang Bian, Yu Huang, Yaoyao Tan, Xue Cheng, Jiale Song and Zhang Leihong. 2021. Ukr.J.Phys.Opt. 22: 225 – 238.
   doi: 10.3116/16091833/22/4/225/2021


6. Optical solitons in fiber Bragg gratings with third and fourth order dispersive reflectivities.
   Yakup Yıldırım, Anjan Biswas, Padmaja Guggilla, Salam Khan, Hashim M. Alshehri and Milivoj R. Belic. 2021. Ukr.J.Phys.Opt. 22: 239 – 254.
   doi: 10.3116/16091833/22/4/239/2021


7. Cubic–quartic optical solitons having quadratic–cubic nonlinearity by sine–Gordon equation approach.
   Yakup Yıldırım, Anjan Biswas, Anelia Dakova, Padmaja Guggilla, Salam Khan, Hashim M. Alshehri and Milivoj R. Belic. 2021. Ukr.J.Phys.Opt. 22: 255 – 269.
   doi: 10.3116/16091833/22/4/255/2021


8. Structural, morphological and luminescence studies of Fe-doped PbI₂ crystals.
   Rybak O. V. and Chekaylo M. V. 2021. Ukr.J.Phys.Opt. 22: 270 – 278.
   doi: 10.3116/16091833/22/4/270/2021