Terman, L. M.; Brevnova, T. N.; Sutina, O. D.; Semenov, V. V.; Ganyushkin, A. V. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1980 , vol. 29, # 3 p. 448 - 452 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1980 , # 3 p. 629 - 634