Arbuzov, B. A.; Erastov, O. A.; Khetagurova, S. Sh.; Zyablikova, T. A.; Arshinova, R. P.; Kadyrov, R. A.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1980 , vol. 29, # 7 p. 1174 - 1177
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1980 , # 7 p. 1630 - 1634