Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 32, # 8 p. 1651 - 1655
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 8 p. 1824 - 1828
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 32, # 5 p. 1027 - 1030
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 5 p. 1136 - 1140