Karpov, V. M.; Platonov, V. E.; Stolyarova, T. A.; Yakobson, G. G.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1981 , vol. 30, # 7 p. 1280 - 1285
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1981 , # 7 p. 1586 - 1591