1. F. Basile, P. Poix, and A. Michel, Ann. Chem. (Warsaw) 2(6), 283 (1977).
2. G. V. Bazuev, O. V. Makarova, and G. P. Shveikin, Zh. Neorg. Khim. 29, 875 (1984).
3. G. V. Bazuev, O. V. Makarova, and N. A. Kirsanov, Zh. Neorg. Khim. 34, 23 (1989).
4. G. V. Bazuev, T. I. Chupakhina, and V. N. Krasil’nikov, Pis’ma Zh. Éksp. Teor. Fiz. 74(7), 440 (2001) [JETP Lett. 74, 401 (2001)].
5. H. Nakano and N. Kamegashira, J. Am. Ceram. Soc. 84(6), 1374 (2001).