Korobeinicheva, I. K.; Fugaeva, O. M.; Furin, G. G. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1986 , vol. 35, p. 1391 - 1397 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1986 , # 7 p. 1537 - 1544