Luk'yanov, O. A.; Salamonov, Yu. B.; Bass, A. G.; Strelenko, Yu. A. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1991 , vol. 40, # 1.1 p. 93 - 98 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1991 , # 1 p. 109 - 114