Dorokhov, V. A.; Gordeev, M. F.; Komkov, A. V.; Bogdanov, V. S.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1990 , vol. 39, # 1.2 p. 130 - 134
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1990 , # 1 p. 145 - 149