Dzhemileva, G. A.; Odinokov, V. N.; Dzhemilev, U. M.; Tolstikov, G. A. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1983 , vol. 32, # 2 p. 307 - 312 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1983 , # 2 p. 343 - 348