Nefedov, O. M.; D'yachenko, A. I.; Agre, S. A.; Chizhov, O. S. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1985 , vol. 34, p. 1785 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1985 , # 8 p. 1931 - 1932