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2. Metals Handbook, 8th ed., p. 1118, ASM, Metals Park, Novelty, Ohio, 1961.
3. R. Hultgren, R. L. Orr, P. D. Anderson, and K. K. Kelley:Selected Values of Thermodynamic Properties of Metals and Alloys, John Wiley and Sons, Inc., New York, 1963.
4. F. N. Rhines:Phase Diagrams in Metallurgy, McGraw-Hill Book Co., New York, 1956.
5. A. Prince:Alloy Phase Equilibria, p. 95, Elsevier Publishing Company, Amster- dam, 1966.