1. N. F. Mott, Metal-Insulator Transitions (Taylor Francis, London, 1984).
2. P. A. Lee and T. V. Ramakrishnan, Rev. Mod. Phys. 57, 287 (1985).
3. V. F. Gantmakher, Electrons in Disordered Media (Fizmatlit, Moscow, 2003) [in Russian].
4. Ya. B. Zel’dovich and L. D. Landau, Zh. Eksp. Teor. Fiz. 14, 32 (1944).
5. I. K. Kikoin, A. P. Senchenkov, S. P. Naurzakov, et al., Preprint IAE-2310 (Inst. At. Energy, Moscow, 1973).