Mamedov, B. A.; Nuretdinov, I. A. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 12 p. 2652 - 2653 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , # 12 p. 2856 - 2857