Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 29, # 3 p. 421 - 425
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 3 p. 603 - 607
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 30, # 6 p. 1054 - 1059
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 6 p. 1323 - 1328