%0 Journal Article %A G.J. Székely %T Algebraic dimension of semigroups with application to invariant measures. %J Semigroup forum %D 1979 %P 185-187 %V 17 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1979__17_134317/ %F SF_1979__17_134317