1. P. A. Koz’min, M. D. Surazhskaya, T. N. Fedotova, and I. B. Baranovskii, Zh. Neorg. Khim. 46(6), 911 (2001) [Russ. J. Inorg. Chem. 46 (6), 817 (2001)].
2. I. B. Baranovskii, M. D. Surazhskaya, G. G. Aleksandrov, and M. A. Golubnichaya, Zh. Neorg. Khim. 53(7), 1136 (2008) [Russ. J. Inorg. Chem. 53 (7), 1055 (2008)].
3. D. Steinborn, H. Junicke, and F. W. Heinemann, Inorg. Chim. Acta 256, 87 (1997).
4. C. H. L. Kennard, J. R. Hail, R. G. Eggins, et al., Cryst. Struct. Commun. 10, 1517 (1981).
5. C. H. L. Kennard, J. R. Hail, N. H. Agnew, et al., Cryst. Struct. Commun. 10, 1513 (1981).