%0 Journal Article %A I. Namioka %T Folner's Conditions for Amenable Semi-Groups. %J Mathematica Scandinavica %D 1964 %P 18-28 %V 15 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1964__15_165885/ %F MS2_1964__15_165885