1. L. Genov, G. Georgiew, Mh. Chem.100, 1892 (1969);L. Genov undI. Dukov, Mh. Chem.104, 750 (1973);L. Newman undP. Klotz, J. Phys. Chem.67, 205 (1963); Inorg. Chem.5, 461 (1966).
2. H. Irving, Proc. of the Intern. Conf. Gothenburg, Sweden, 1966. Amsterdam: North-Holland Publ. Comp. 1967;H. Irving undH. S. Al-niaimi, J. Inorg. Nucl. Chem.27, 2263 (1965);E. Kassierer undA. S. Kertes, J. Inorg. Nucl. Chem.34, 3209 (1972);T. Shigematsu, Bull. Chem. Soc. Japan48, 2656 (1968).
3. L. I. Kononenko undR. A. Witkun, J. Neorg. Chim. [UdSSR]13, 1715 (1968).
4. L. I. Kononenko undR. A. Witkun, J. Neorg. Chim. [UdSSR]15, 1345 (1970);L. I. Kononenko, R. A. Witkun undL. M. Burtnenko, Chimija protzessov ekstraktzii, S. 249. Moskau: Nauka. 1972.
5. E. F. Kassierer, undA. S. Kertes, Proc. of the 3rd Symposium on Co-ord. Chem., Debrecen, Hungary, 1970, S. 119. Budapest: 1970.