Tolstikov, G. A.; Lerman, B. M.; Umanskaya, L. I.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 6 p. 1218 - 1220
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 6 p. 1367 - 1370