Volynskii, N. P.; Zegel'man, L. A.; Smirnov, M. B. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1989 , vol. 38, # 2.2 p. 341 - 347 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1989 , # 2 p. 393 - 399