Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 37, # 12 p. 2557 - 2560
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 12 p. 2833 - 2836
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 30, # 11 p. 2097 - 2100
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 11 p. 2535 - 2539