1. P. M. Zorkii and A. E. Razumaeva, Zh. Strukt. Khim.,20, 463 (1979).
2. A. E. Razumaeva and P. M. Zorkii, Zh. Strukt. Khim.,21, 77 (1980).
3. P. M. Zorkii and V. K. Bel'skii, in: Crystallography and Mineralogy. Proceedings of the Fedorov Anniversary Session, 1969 [in Russian], Leningrad (1972), p. 79.
4. A. E. Razumaeva, Author's Self-Abstract of Candidate's Dissertation, Moscow State University, Moscow (1980).
5. P. M. Zorkii and T. N. Kukina, Vestn. Mosk. Gos. Univ. Ser. Khim.,22, 137 (1981).