Shustov, G. V.; Tavakalyan, N. B.; Shustova, L. L.; Pleshkova, A. P.; Kostyanovskii, R. G. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 2 p. 330 - 339 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 2 p. 364 - 375