Troyanskii, E. N.; Lazareva, M. I.; Demchuk, D. V.; Nikishin, G. I. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1986 , vol. 35, # 5 p. 1098 - 1099 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1986 , # 5 p. 1206 - 1207