1. K. B. Yatsimirskii, V. V. Mosin, A. N. Kozachkova, and I. A. Efimenko, Koord. Khim. 19(10), 793 (1993).
2. R. Ilavarasi, M. N. S. Rao, and M. R. Udupa, Indian J. Chem., Sect. A: Inorg., Bio-Inorg., Phys., Theor. Anal. Chem. 38(2), 161 (1999).
3. A. K. Molodkin, N. Ya. Esina, and O. I. Andreeva, Zh. Neorg. Khim. 49(3), 468 (2004) [Russ. J. Inorg. Chem. 49 (3), 417 (2004)].
4. I. A. Efimenko, N. A. Ivanova, and O. S. Erofeeva, Proceeding of the 21st Chugaev International Conference on Coordination Chemistry (Kiev, 2003), p. 72 [in Russian].
5. O. N. Shishilov, T. A. Stromnova, and A. V. Churakov, Zh. Neorg. Khim. 51(4), 626 (2006) [Russ. J. Inorg. Chem. 51 (4), 574 (2006)].