Yurtanov, A. I.; Pushin, A. N.; Vitt, S. V.; Kovalenko, S. V.; Martynov, I. V.
Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1986 , vol. 35, # 4 p. 852 - 855
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1986 , # 4 p. 934 - 937