Katrich, G. S., S. I. Petrushenko, and O. Botsula. “Optic Properties of ZnO Films Grown by Sol-Gel Technique”. Visnyk of V.N. Karazin Kharkiv National University, Series “Radio Physics and Electronics”, no. 35, Dec. 2021, pp. 79-85, doi:10.26565/2311-0872-2021-35-07.