1. G. Bastard, Physics of Narrow Gap Semiconductors, Proceedings of III International Conference, Warsaw 1977, p. 63.
2. M. Jaczyński, J. Kossut, R.R. Gala̧zka, Physics of Narrow Gap Semiconductors, Proceedings of III International Conference, Warsaw 1977, p. 325.
3. Diluted Magnetic Semiconductors;Furdyna,1988
4. Handbook of Semiconductors, Vol. 3b;Dietl,1994