1. P. P. Fedorov,Neorg. Mater.,33. No. 12, 1415–1424 (1997).
2. P. P. Fedorov,Kristallokhimiya,42, No. 6, 1141–1152 (1997).
3. L. A. Nisselson, K. V. Tret'yakova, G. G. Fedorov, and é. G. Rakov,Proceedings of the 2nd All-Union Symposium on Inorganic Fluoride Chemistry (1970), p. 215.
4. V. K. Goncharuk, Chemical Sciences Candidate's Dissertation. Institute of Chemistry, Vladivostok (1983).
5. V. L. Kuznetsov, D. L. Rogachev, A. I. Agulyanskii, and V. T. Kalinnikov,Zh. Stmkt. Khim.,26, No. 4, 85–89 (1982)