Freidlina, R. Kh.; Tumanskaya, A. L.; Vitt, S. V.; Grigor'ev, N. A.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1987 , vol. 36, # 12 p. 2641 - 2643
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1987 , # 12 p. 2844 - 2847