1. Kiselev, Yu.M., Nikonov, M.V., Tananaev, I.G., and Myasoedov, B.F., Dokl. Chem., 2009, vol. 425,part 2 [Dokl. Akad. Nauk, 2009, vol. 425, no. 5].
2. Foster, S., Felps, S., Johnson, L.W., Larson, D.B., and McGlynn, S.P., J. Am. Chem. Soc., 1973, vol. 95, p. 6578.
3. Kiseleva, A.A., Cand. Sci. (Chem.) Dissertation, Moscow: Inst. Fiz. Khim. Akad. Nauk USSR, 1989.
4. Lever, A.B.P., Inorganic Electronic Spectroscopy, 2nd ed., Amsterdam: Elsevier, 1984. Translated under the title Elektronnaya spektroskopiya neorganicheskikh soedinenii, Moscow: Mir, 1987.
5. Kiselev, Yu.M., Kopelev, N.S., and Bobylev, A.P., Zh. Neorg. Khim., 1989, vol. 34, p. 2654.