Troyanskii, E. I.; Svitan'ko, I. V.; Ogibin, Yu. N.; Nikishin, G. I.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1983 , vol. 32, # 10 p. 2090 - 2094
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1983 , # 10 p. 2316 - 2322