1. C. O. Smith:Nuclear Reactor Materials, Addison-Wesley Publishing Co., Reading, Mass., 1967.
2. A. R. Kaufmann, ed.,Nuclear Reactor Fuel Elements, Interscience Publishers, New York, 1962.
3. L. G. Carpenter and T. F. Harle:Proc. Roy. Soc., London, 1932, vol. 136A, p. 243.
4. F. Förster and G. Tschentke:Z. Metallk., 1940, vol. 32, p. 191.
5. C. C. Person:Ann. Chim. Phys., 1848, vol. 24, p. 128.