Elinson, M. N.; Fedukovich, S. K.; Nikishin, G. I. Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), 1988 , vol. 37, # 1 p. 86 - 90 Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, 1988 , # 1 p. 96 - 100