%0 Journal Article %A Ježek, Jaroslav %A Kepka, Tomáš %T Semigroup representations of medial groupoids %J Commentationes Mathematicae Universitatis Carolinae %D 1981 %P 513-524 %V 22 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1981__22_3_a5/ %G en %F CMUC_1981__22_3_a5