1. Adler, J., M. Silver, 1982: Phil. Mag. B45, 307
2. Beyer, W., H. Overhof, 1984: in Semiconductors and Semimetals, Vol. 21c ed. by R.K. Willardson, A.C. Beer (Academic Press, New York) p. 257
3. Bonch-Bruevich, V.L., 1962: Fiz. Tverd. Tela 4, 2660 (English transl.: Sov. Phys. — Solid State 4, 1953 (1963))
4. Bonch-Bruevich, V.L., 1970: phys. stat. sol. 42, 35
5. Bonch-Bruevich, V.L., 1983: Usp. Fiz. Nauk 104, 583 (English transl.: Sov. Phys. Usp. 26, 664)