Lantratova, O. B.; Kuz'min, V. A.; Prokof'ev, A. I.; Khudyakov, I. V.; Pokrovskaya, I. E. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1981 , vol. 30, # 8 p. 1459 - 1465 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1981 , vol. 30, # 8 p. 1789 - 1796