1. C. M. Cook, Quantum Chemistry Program Exchange, Indiana University, Program No. 391.
2. K. S. Krasnov, N. V. Filippenko, and V. A. Bobkova, Molecular Constants of Inorganic Compounds [in Russian], Khimiya, Leningrad (1979).
3. E. Kochanski, J. Mol. Struct.,107, 49 (1984).
4. C. N. R. Rao and G. V. Kulkarni, J. Mol. Struct.,108, 113 (1984).
5. B. M. Smirnov, Complex Ions [in Russian], Nauka, Moscow (1983).