1. V. M. Arutyunian, Altern. Energet. Ekol. 3(23), 21 (2005).
2. V. M. Arutyunian, Altern. Energet. Ekol. 3(47), 33 (2007).
3. Kh. M. Salikhov, Extended Abstract of Doctoral Dissertation in Physics and Mathematics (Phys. Tech. Inst. named by A. F. Ioffe of RAS, St. Petersburg, 2010).
4. M. Shur, Physics of Semicoductor Devices (Mir, Moscow, 1992; Prentice-Hall, New York, 1990), Vol. 1, ch. 2, p. 209.
5. A. T. Gorelenok, V. G. Gruzdov, V. V. Evstropov, V. G. Sidorov, I. S. Tarasov, and L. M. Fedorov, Sov. Phys. Semicond. 18, 647 (1984).