Zapevalov, A. Yu.; Saloutina, L. V.; Kodess, M. I.; Kolenko, I. P. Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, # 8 p. 1466 - 1472 Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 8 p. 1626 - 1633