Yuminov, V. S.; Kartsov, S. V.; Vinogradov, L. E.; Fokin, A. V. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1988 , vol. 37, # 2 p. 315 - 318 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1988 , # 2 p. 396 - 398