Kamalov, R. M.; Stepanov, G. S.; Gol'dfarb, E. I.; Ryzhikov, D. V.; Pudovik, M. A.; Pudovik, A. N.
Doklady Chemistry, 1989 , vol. 308, # 4-6 p. 306 - 309
Dokl. Akad. Nauk SSSR Ser. Khim., 1989 , vol. 308, # 6 p. 1383 - 1387
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 35, # 12 p. 2535 - 2539
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 12 p. 2765 - 2769