Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 38, # 4.2 p. 819 - 822
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 4 p. 909 - 913
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 35, # 3 p. 543 - 551
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 3 p. 598 - 606