Saloutina, L. A.; Zapevalov, A. Ya.; Kodess, M. I.; Kolenko, I. P.; German, L. S. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1983 , vol. 32, p. 1303 - 1306 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1983 , # 6 p. 1434 - 1437