1. Yu. Ya. YAKOVLEV, A. I. KULAK, V. A. RYABUKHIN, 2nd International Conference on Peace Application of Atomic Energy, Geneva, September 1958, Vol. 4, p. 280.
2. YAJIMA, Y. KAMEMOTO, K. SHIBA, J. Chem. Soc. Japan, Pure Chemistry Sec., 82 (1961) 194.
3. P. I. ARTYUKHIN, K. A. STARTSEVA, A. V. NIKOLAEV, J. Radioanal. Chem., 17 (1974) 183.
4. A. V. NIKOLAEV, V. G. TORGOV, E. N. GILBERT, Izv. Sibirsk. Akad. Nauk SSSR, Ser. Khim. Nauk, 14 (1967) 120.
5. V. A. MIKHAILOV, V. G. TORGOV, E. N. GILBERT, Proc. of Intern. Solvent Extraction Conf., 1971, Vol. 11, Soc. Chem. Ind., London, 1971, p. 1112.