1. O. S. Filipenko, L. O. Atovmyan, B. L. Tarnopol'skii, and Z. Sh. Safina, Zh. Strukt. Khim.,20, 80 (1979).
2. Z. A. Starikova, T. M. Shchegoleva, V. K. Trunov, et al., Kristallografiya,24, 1211 (1979).
3. T. N. Kukina and P. M. Zorkii, Vestn. MGU, Ser. 2, Chem.,22, 248 (1981).
4. P. M. Zorkii and V. A. Koptsik, in: Current Problems of Physical Chemistry [in Russian], Vol. 11, Izd. MGU (1979), p. 113.
5. P. M. Zorkii and T. N. Kukina, Vestn. MGU, Ser. 2, Chem.,22, 137 (1981).