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4. R. J. Fries, J. E. Cummings, C. G. Hoffman, and S. A. Daily: Los Alamos Scientific Laboratory Report, LA-3795-MS, TID-4500, April 1968.
5. F. A. Shunk: “Constitution of Binary Alloys, Second Supplement,” McGraw-Hill Book Company, New York, NY, 1969, p. 149.