1. D.H. Templeton, Carol H. Dauben, University of California Radiation Laboratory Report, July 1952, Report No. UCRL-1886.
2. H.G. García Flores, Ph.D. Thesis, University of Nebraska – Lincoln, 2010.
3. Electronic structure and ionicity of actinide oxides from first principles
4. C.E. Holley Jr., R.N.R. Mulford, E.J. Huber Jr., E.L. Head, F.H. Ellinger, C.W. Bjorklund, in: Proc. Second UN Int. Conf. Peaceful Uses Atomic Energy, Geneva, 1958, 6, pp. 215–220.