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2. Battelle Memorial Institute, Manhattan Project (CT-1009 [1943]).
3. Hansen, M.; Anderko, K. (Constitution of Binary Alloys, McGraw-Hill, New York 1958, p. 299).
4. Bellamy, R. G. ; Hill, N. A. (Extraction and Metallurgy of Uranium, Thorium, and Beryllium, Pergamon, Oxford 1963, p. 165).
5. Rough, F. A.; Bauer, A. A. (Constitutional Diagrams of Uranium and Thorium Alloys, Addison-Wesley, Reading, Mass., 1958, pp. 1/153).