1. J. L. Shay andJ. H. Wernick, ?Ternary Chalcopyrite Semiconductors, Growth, Electronic Properties and Applications?, (Pergamon, Oxford, 1974).
2. A. Miller, A. Makinnon andD. Weaire, in ?Solid State Physics?, Vol. 36, edited by H. Ehrenreich, F. Seitz and D. Turnbull (Academic, New York, 1981).
3. B. R. Pamplin, T. Kiyosawa andK. Masumoto,Prog. Cryst. Growth Charact. 1 (1979) 331.
4. J. E. Jaffe andAlexzunger,Phys. Rev. B 29 (1983) 1882.
5. ??Idem and ??,Phys. Rev. 29 (1984) 4.