1. Jonker, B.T., Krebs, J.J., Qadri, S.B. et al., (1988) J. Appl. Phys., 63, 3303.
2. Aven, M. and Prener, J.S. (1967) Physics and Chemistry of II–VI Compounds, North Holland Publishing Company, Amsterdam.
3. Hartman, H., Mach, R. and Selle, B. (1982) Current Topics in Materials, 9, (Ed. E. Kaldis), North Holland Publishing Company, Amsterdam, p. 1.
4. Galazka, R.R. (1979) Inst. Phys. Conf. Ser., 43, 133.
5. Gaj, J.A. (1980) J. Phys. Soc. Japan, 49, suppl. A, 797.