Zaks, I. M.; El'yanov, B. S.; Zhulin, V. M.; Moiseenkov, A. M.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1984 , vol. 33, p. 1005 - 1012
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1984 , # 5 p. 1094 - 1102