1. V. G. Vaks, S. P. Kravchuk, and A. V. Trefilov, Fiz. Met. Metalloved.,44, 1151 (1977).
2. V. G. Vaks, E. V. Zarochentsev, S. P. Kravchuk, B. P. Safaronov, and A. V. Trefilov, Phys. Status Solidi, B,85, 63 (1978).
3. E. V. Chulkov, V. E. Panin, and S. G. Psakh'e, Fiz. Met. Metalloved.,52, 1236 (1981).
4. S. G. Psakh'e, V. E. Panin, E. V. Chulkov, and M. F. Zhorovkov, Izv. Vyssh. Uchebn. Zaved., Fiz., 99 (1980).
5. K. Krokston, Liquid State Physics [in Russian], Mir, Moscow (1978).