1. L. E. Tanner, P. C. Clap, and R. S. Toth, Met. Res. Bull.,3, 855?862 (1968).
2. S. K. Das, P. R. Okamoto, P. M. Fisher, and G. Tomas, Acta Met.,21, No. 7, 915?927 (1973).
3. J. Dutkiewicz and G. Thomas, Trans. Met.,6A, No. 10, 1919?1928 (1975).
4. S. K. Das and G. Tomas, in: Order-Disorder Transformation in Alloys, Warlimont (ed.), Berlin (1974), pp. 332?343.
5. J. E. Spruiell and J. Starsbury, Phys., Chem., Sol.,26, 811?8222 (1965).