Marchenko, L. S.; Levin, D. Z.; Plakhotnik, V. A.; Mortikov, E. S. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1986 , vol. 35, # 1 p. 81 - 84 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1986 , # 1 p. 94 - 98