1. A.N. Zelikman, O.E. Krein, and G.V. Samsonov:Metallurgy of Rare Metals, Israel Program for Scientific Translations, Jerusalem, 1966, pp. 60–98.
2. W. G. Scholz, D. V. Doane, and G. A. Timmons:Trans. TMS-AIME, 1961, vol. 221, pp. 356–64.
3. Y. Maru, K. Ito, and Y. Kondo:Proc. Int. Conf. Thermal Analysis, R.E. Schwenker, Jr., and P.D. Gam, eds., Academic Press, New York, NY, 1969, pp. 1291–313.
4. D.O. Buker: U.S. Patent no. 3,966,459, June 29, 1976.
5. J. S. Nachtman and H. G. Poole: U. S. Patent nos. 3,020,151, February 6, 1962, and 3,090,686, May 21, 1963.