1. Leroux-Hugon, P., Veyssie, J. J.: Phys. Status Solidi 8 (1965) 561.
2. Borshchevskii, A. S., Kotsyuruba, E. S.: Fiz. Tekh. Poluprovodn. 9 (1975) 2346; Sov. Phys. Semicond. (English Transl.) 9 (1976) 1513.
3. Shay, T. L., Wernick, T. H.: "Ternary Chalcopyrite Semiconductors" Growth, Electronics, Properties and Applications. Pergamon, 1975.
4. Popov, A. S., Trifonova, E. P.: Phys. Status Solidi (a) 58 (1980) 679.
5. Daunov, M.I., Magomedov, A.B., Ramazanova, A.E.: Fiz. Tekh. Poluprovodn. 19 (1985) 936; Sov. Phys. Semicond. (Engl. Transl.) 19 (1985) 577.