1. M. Tosi, Solid State Phys. 16, 1 (1964).
2. C. Kittel, Introduction to Solid State Physics (John Wiley & Sons, New York, 1996).
3. A.J. Dekker, Solid State Physics (Macmillan Press, London, 1981).
4. R. Kubo, T. Nagamiya, Solid State Physics (McGraw-Hill, New York, 1968).
5. N.W. Ashcroft, N.D. Mermin, Solid State Physics (Holt, Rinchart and Winston, Philadelphia, 1976).