Rastegaeva, V. M.; Kovalev, B. G.; Kurts, A. L.; Bundel, Yu. G.
Journal of Organic Chemistry USSR (English Translation), 1989 , vol. 25, # 101 p. 1866 - 1872
Zhurnal Organicheskoi Khimii, 1989 , vol. 25, # 10 p. 2066 - 2073