1. Zh. I. Alferov, Usp. Fiz. Nauk 172, 1072 (2002).
2. A. Kramer, Usp. Fiz. Nauk 172, 1087 (2002).
3. A. M. Vasil’ev and A. P. Landsman, Semiconductor Photoconverters (Sov. Radio, Moscow, 1971), Ch. 2, pt. 4, p. 36; pt. 6, p. 46 [in Russian].
4. V. I. Il’in, S. F. Musikhin, and A. Ya. Shik, Semiconductors with Graded Band-Gap and Heterostructures (Nauka, St.-Petersburg, 2000), Ch. 1, pts. 1.1–1.4; Ch. 4, pt. 4.1 [in Russian].
5. G. V. Tsarenkov, Sov. Phys. Semicond. 9, 166 (1975).