Bumagin, N. A.; Gulevich, Yu. V.; Beletskaya, I. P. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1984 , vol. 33, # 12 p. 2600 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1984 , # 12 p. 2835 - 2836