1. S. Yu. Stefanovich, V. B. Kalinin, K. E. German, and S. M. El’-Vaer, Zh. Neorg. Khim. 36 (9), 2200 (1991).
2. S. Yu. Stefanovich, A. V. Mosunov, B. V. Mill’, and A. V. Butashin, Zh. Neorg. Khim. 40 (6), 899 (1995).
3. Ya. O. Shablovskii, Zh. Fiz. Khim. 76, 1198 (2002) [Russ. J. Phys. Chem. 76, 1073 (2002)].
4. Ya. O. Shablovskii, Zh. Fiz. Khim. 78, 1551 (2004) [Russ. J. Phys. Chem. 78, 1357 (2004)].
5. Ya. O. Shablovskii, Zh. Fiz. Khim. 79, 629 (2005) [Russ. J. Phys. Chem. 79, 533 (2005)].