1. Shishkina, O.V., Serezhkina, L.B., Serezhkin, V.N., et al., Zh. Neorg. Khim., 2001, vol. 46, no. 9, p. 1503 [Russ. J. Inorg. Chem. (Engl. Transl.), vol. 46, no. 9, p. 1359].
2. Serezhkin, V.N., Serezhkina, L.B., Pushkin, D.V., and Vologzhanina, A.V., Koord. Khim., 2005, vol. 31, no. 10, p. 775.
3. Inorganic Crystal Structure Database, Karlsruhe: Gmelin-institut fur anorganische Chemie FIC, 2003.
4. Cambridge Structural Database System. Version 5.25, Cambridge: Crystallographic Data Centre, 2003.
5. Blatov, V.A., Shevchenko, A.P., and Serezhkin, V.N., Koord. Khim., 1999, vol. 25, no. 7, p. 483.