Skorobogatova, E. V.; Grudzinskaya, E. Yu.; Afanas'ev, P. S; Kartashov, V. R.; Zefirov, N. S.; Caple, R. Journal of Organic Chemistry USSR (English Translation), 1987 , vol. 23, p. 1814 - 1822 Zhurnal Organicheskoi Khimii, 1987 , vol. 23, # 10 p. 2052 - 2060