1. L. S. Khaikin, O. E. Grikina, V. A. Sipachev, A. A. Granovsky, and V. S. Nikitin,Izv. Akad. Nauk, Ser. Khim., 2000, 616 [Russ. Chem. Bull., 2000,49, 620 (Engl. Transl.)].
2. V. A. Sipachev, L. S. Khaikin, O. E. Grikina, V. S. Nikitin, and M. Traetteberg,J. Mol. Struct., 2000,523, 1.
3. L. S. Khaikin, O. E. Grikina, V. A. Sipachev, A. V. Belyakov, E. T. Bogoradovskii, and M. Kolonits,J. Mol. Struct., 2000,523, 23.
4. L. S. Khaikin, V. P. Novikov, A. V. Belyakov, and L. V. Vilkov, inStroenie molekul [The Structure of Molecules], Izd-vo Moskovskogo Gos. Univ., Moscow, 1986, p. 26, (in Russian).
5. S. J. Cyvin,Molecular Vibrations and Mean Square Amplitudes, Elsevier, Amsterdam, 1968.