Egorov, V. Yu.; Krashakov, S. A.; Zolotova, N. V.; Kharitonov, V. V.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 4 p. 688 - 690
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , # 4 p. 760 - 762