Bumagin, N. A.; Gulevich, Yu. V.; Artamkina, G. A.; Beletskaya, I. P. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1984 , vol. 33, p. 1098 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1984 , # 5 p. 1195