文献:Markovskii,V.I. et al. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1975 , vol. 24, # 12 p. 2730 - 2731 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1975 , vol. 24, # 12 p. 2838 - 2840