Kelarev, V. I.; Gasanov, S. Sh.; Karakhanov, R. A.; Polivin, Yu. N.; Kuatbekova, K. P.; Panina, M. E.
Journal of Organic Chemistry USSR (English Translation), 1992 , vol. 28, # 12.2 p. 2069 - 2074
Zhurnal Organicheskoi Khimii, 1992 , vol. 28, # 12 p. 2561 - 2568