1. Kondratov, P.I. and Gel’man, A.D., Radiokhimiya, 1960, vol. 2, no. 3, pp. 315–319.
2. Moskvin, A.I. and Gel’man, A.D., Zh. Neorg. Khim., 1958, vol. 3, no. 4, pp. 956–961.
3. Mandleberg, C.J., Francis, K.E., and Smith, R., J. Chem. Soc., 1962, no. 6, pp. 2464–2468.
4. Abrahamson, S.G., J. Inorg. Nucl. Chem., 1967, vol. 29, no. 3, pp. 842–844.
5. Fomin, V.V., Vorob’ev, S.P., and Andreeva, M.A., At. Energ., 1958, vol. 4, no. 1, pp. 57–60.