1. T. Braun, G. Ghersini (eds.),Extraction Chromatography, Mir, Moscow, 1978, pp. 413, 627 (in Russian).
2. S. S. Grazhulene, V. K. Karandashev, Yu. I. Popandopulo, V. Yu. Nagy, in:Methods of Analysis of High Purity Materials, (Y. Q. Karpov, ed.) Nauka, Moscow, 1987, p. 187 (in Russian).
3. S. S. Grazhulene, Yu. I. Popandopulo, V. K. Karandashev, O. I. Kharitonova, A. S. Gonchakov,Zh. Anal. Khim. 1988,43, 389.
4. D. F. C. Morris, E. L. Short,J. Inorg. Nucl. Chem. 1964,26, 627.
5. A. B. Sokolov, Yu. A. Zolotov,Zh. Neorg. Khim. 1972,17, 1123.