1. V. S. Buslaev, Teor. Mat. Fiz.,58, 233 (1984).
2. I. M. Lifshits, M. Ya. Azbel', and M. I. Kaganov, Electron Theory of Metals [in Russian], Nauka, Moscow (1971).
3. S. V. Vonsovskii and M. I. Katsnel'son, Quantum Solid-State Physics [in Russian], Nauka, Moscow (1983).
4. J. M. Ziman, Principles of the Theory of Solids, Cambridge University Press, Cambridge (1964).
5. N. Ashcroft and N. Mermin, in: Solid-State Physics, Vol. 1 [Russian translation], Mir, Moscow (1979).