Kuchin, A. V.; Spivak, A. Yu.; Tolstikov, G. A.; Yur'ev, V. N. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1982 , vol. 31, # 4 p. 803 - 806 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1982 , # 4 p. 910 - 913