Shvartsberg, M. S.; Moroz, A. A.; Kiseleva, O. D.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1981 , vol. 30, # 4 p. 608 - 611
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1981 , # 4 p. 827 - 830