Volynskii, N. P.; Perepelitchenko, L. I. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1986 , vol. 35, # 4 p. 779 - 784 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1986 , # 4 p. 858 - 864