Vasil'eva, T. T.; Germanova, L. F.; Dostovalova, V. I.; Nelyubin, B. V.; Freidlina, R. Kh.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1983 , vol. 32, # 12 p. 2474 - 2479
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1983 , # 12 p. 2759 - 2765