Kostyanovskii, R. G.; Mishchenko, A. I.; Prosyanik, A. V.; Zaichenko, N. L. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1983 , vol. 32, p. 1421 - 1428 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1983 , # 7 p. 1572 - 1578