1. N. A. Bliznyuk, S. V. Borisov, and E. S. Kuklina,Zh. Struk. Khim.,35, No. 1, 71–80 (1994).
2. S. V. Borisov, N. V. Podberezskaya, R. F. Klevtsova, and N. A. Stoporeva, in:Crystallography and Crystal Chemistry (Transactions) [in Russian], Nauka, Moscow (1986), p. 326.
3. S. V. Borisov,Zh. Struk. Khim.,33, No. 6, 123–130 (1992).
4. E. A. Pobedimskaya and N. V. Belov,Kristallografiya,10, No. 6, 908–911 (1965).
5. S. V. Borisov,Zh. Struk. Khim.,27, No. 3, 164 (1986).