Veits, Yu. A.; Nasonova, N. S.; Karlstedt, N. B.; Neganova, E. G.; Beletskaya, I. P. Russian Journal of Organic Chemistry, 1995 , vol. 31, # 2 p. 156 - 158 Zhurnal Organicheskoi Khimii, 1995 , vol. 31, # 2 p. 179 - 182