%0 Journal Article %A Donnelly, John %T A cancellative amenable ascending union of nonamenable semigroups %J Czechoslovak Mathematical Journal %D 2011 %P 687-690 %V 61 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0039-5/ %R 10.1007/s10587-011-0039-5 %G en %F 10_1007_s10587_011_0039_5