Popova, L. A.; Bardyshev, I. I.; Korchagina, D. V.; Dubovenko, Zh. V; Gatilov, Yu. V.; Barkhash, V. A. Journal of Organic Chemistry USSR (English Translation), 1982 , vol. 18, p. 709 - 720 Zhurnal Organicheskoi Khimii, 1982 , vol. 18, # 4 p. 815 - 829