doi:10.1002/zaac.19422490401. Brown, A.; Norreys, J. J. Beta-Polymorphs of Uranium and Thorium Disilicides. Nature. 1959, 183 (4662): 673–673. ISSN 0028-0836
and its product from the thorium fuel cycle, uranium-233. Emission of neutrons during the fission of uranium is important not only for maintaining the nuclear
step」,发行于March 26, 1974,指定于Union Carbide Corporation Committee on Medical Isotope Production Without Highly Enriched Uranium. Medical Isotope Production Without