I. P. Studenyak, M. Kranjčec, V. Y. Izai, V. I. Studenyak, M. M. Pop, and L. M. Suslikov, “Ellipsometric and Spectrometric Studies of (Ga0.2In0.8)2Se3 Thin Film”, Ukr. J. Phys., vol. 65, no. 3, p. 231, Mar. 2020.