1. J. C. Slater, “Quantum Theory of Molecules and Solids,” Vol. 2, McGraw Hill (New York), 1965, p. 233.
2. B. Segall and F. S. Ham in “Methods in Computational Physics,” Vol. 8, Academic Press, Inc., New York, 1968 p. 251.
3. R. C. Chaney, C. C. Lin and E. E. Lafon, Physical Review B3, 459 (1971).
4. G. Dresselhaus, A. F. Kip and C. Kittel, Physical Review 98, 368 (1955).
5. E. O. Kane, “Physics of III-V Compounds,” Vol. 1, Chap. 3, Academic Press, Inc., New York (1966).