Reznikov, V. A.; Reznikova, T. I.; Volodarskii, L. B. Journal of Organic Chemistry USSR (English Translation), 1982 , vol. 18, # 10 p. 1881 - 1888 Zhurnal Organicheskoi Khimii, 1982 , vol. 18, # 10 p. 2135 - 2143