1. , , , and , Poluprovodnikovye khalkogenidy i splavy naikhosnove, Izd. Nauka, Moscow 1975 (p. 220).
2. and , in: Problemy dielektricheskoi elektroniki, Ed. Izd. FAN, Tashkent 1974 (p. 262).
3. and , Current Injection in Solids, Academic Press, New York 1970.