1. G. J. Iafrate, in: Gallium Arsenide Technology (D. K. Ferry, ed.), Ch. 12, Sams, Indianapolis (1985).
2. W. Kohn and J. M. Luttinger, Phys. Rev.
108, 590 (1957).
3. P. N. Argyres, J. Phys. Chem. Solids
19, 66 (1961).
4. P. J. Price, IBM J. Res. Dev.
10, 395 (1966).
5. A. Hasegawa and J. Yamashita, J. Phys. Chem. Solids
23, 875 (1962).