1. Kirson, B. and Israeli, Y.J., Bull. Soc. Chem. France, 1963, no. 11, p. 2527.
2. Bhat, T.R., Radhamma, D., and Shanker, J., J. Inorg. Nucl. Chem., 1965, vol. 27, p. 2641.
3. Korsse, J., Pronk, L.A., and van Embden, C., et al., Talanta, 1983, vol. 30, no. 1, p. 1.
4. Citron, I., Anal. Chim. Acta, 1962, vol. 26, p. 446.
5. Shapnik, M.S., Gil’manov, A.N., Petrova, T.P., and Gubaidullin, F.F., Zh. Neorg. Khim., 1975, vol. 20, no. 8, p. 2148.