Dzhemilev, U. M.; Ibragimov, A. G.; Minsker, D. L.; Muslukhov, R. R.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 2 p. 365 - 368
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , # 2 p. 406 - 409