Trofimov, B.A.; Nedolya, N.A.; Papsheva, N.P.; Gerasimova, V.V.; Voronkov, M.G. Journal of Organic Chemistry USSR (English Translation), 1988 , vol. 24, p. 1597 Zhurnal Organicheskoi Khimii, 1988 , vol. 24, # 8 p. 1771 - 1772