Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 38, # 11.1 p. 2229 - 2233
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 11 p. 2428 - 2433
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 33, # 11 p. 2227 - 2232
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 11 p. 2437 - 2442