%0 Journal Article %A James C.S. Wong %T Characterisations of extremly amenable semigroups. %J Mathematica Scandinavica %D 1981 %P 101-108 %V 48 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1981__48_166741/ %F MS2_1981__48_166741