1. Ko, T., and Edmondson, B., Acta Met., 2, 235 (1954).
2. Cohen, M., Machlin, E. S., and Paranjpe, V. G., “Thermodynamics in Physical Metallurgy”, 162 (A.S.M., 1949).
3. Ramachandran, E. G., and Dasarathy, C., Acta Met., 8, 274 (1960).
4. Ramachandran, E. G., and Dasarathy, C., Acta Met. (in the press)