1. E. N. Yurchenko, Molecular-Spectroscopy Methods in Catalyst and Coordination-Compound Chemistry [in Russian], Nauka, Novosibirsk (1986).
2. L. M. Sverdlov, M. A. Kovner, and E. P. Krainor, Polyatomic-Molecule Vibrational Spectra [in Russian], Nauka, Moscow (1970).
3. N. N. Bulgakov, Yu. A. Borisov, and V. V. Popovskii, Kinet. Katal.,14, 468 (1973).
4. J. H. Rose and J. Ferraute, Phys. Rev. B,28, No. 4, 1835 (1983).
5. R. Gillespie, Molecular Geometry [Russian translation], Mir, Moscow (1975), p. 278.