1. V. L. Bondch-Bruevich et al., The Electron Theory of Disordered Semiconductors [in Russian], Nauka, Moscow (1981).
2. J. A. Reimer, R. W. Vauchan, and J. C. Knights, Phys. Rev. Lett.44, 193 (1980).
3. V. L. Bonch-Bruevich, Usp. Fiz. Nauk.,140, 583 (1983).
4. M. A. Krivoglaz, Scattering Theory of X-Rays and Thermal Neutrons by Real Crystals [in Russian], Nauka, Moscow (1967).
5. N. C. Haider and R. L. Wourms, Z. Naturforsch.,30a, 55 (1975).