1. F. Reif:Fundamentals of Statistical and Thermal Physics (New York, N. Y., 1965).
2. C. Kittel:Thermal Physics (New York, N. Y., 1969).
3. C. Kittel:Quantum Theory of Solids (New York, N. Y., 1963).
4. C. Kittel:Introduction to Solid State Physics (New York, N. Y., 1976), 5th edition.
5. N. W. Ashcroft andN. D. Mermin:Solid State Physics (New York, N. Y., 1976).