Nuretdinova, O. N.; Guseva, F. F.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 7 p. 1478 - 1479
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 7 p. 1659 - 1660