1. Pavlishchuk, V.V., Teor. Eksp. Khim., 1997, vol. 33, p. 341.
2. Eremenko, I.L., Novotortsev, V.M., Sidorov, A.A., and Fomina, I.G., Ross. Khim. Zh., 2004, vol. 48, p. 49.
3. Nefedov, V.I., Koord. Khim., 1975, vol. 1, no. 3, p. 310.
4. Fadley, C.S. and Shirly, D.A., J. Chem. Phys., 1972, vol. 57, p. 973.
5. Kasuga, K. and Tsutsui, M., Coord. Chem. Rev., 1980, vol. 32, no. 1, p. 67.