Vasil'eva, T. P.; Lin'kova, M. G.; Kil'disheva, O. V.; Knunyants, I. L.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1980 , vol. 29, # 9 p. 1507 - 1510
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1980 , # 9 p. 2111 - 2114