1. A. Sh. Abdinov, A. G. Kyazym-zade, and A. A. Akhmedov, Izv. Akad. Nauk AzSSR, Ser. Fiz.-Tekh. Mat. Nauk, No. 2, 72 (1977).
2. A. Sh. Abdinov and A. G. Kyazym-zade, Sov. Phys. Semicond. 9, 1290 (1975).
3. A. Sh. Abdinov and R. F. Babaeva, Neorg. Mater. 31, 1020 (1995).
4. M. K. Sheinkman and A. Ya. Shik, Sov. Phys. Semicond. 10, 128 (1976).
5. R. F. Mekhtiev, G. B. Abdullaev, and G. A. Akhundov, Dokl. Akad. Nauk AzSSR 18(6), 11 (1962).