Medvedeva, A. S.; Borisova, A. I.; Kalikhman, I. D.; Vyazankin, N. S.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 6 p. 1243 - 1246
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , vol. 36, # 6 p. 1347 - 1351