%0 Journal Article %A Stanovský, David %T Distributive groupoids are symmetric-by-medial: An elementary proof %J Commentationes Mathematicae Universitatis Carolinae %D 2008 %P 541-546 %V 49 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2008__49_4_a2/ %G en %F CMUC_2008__49_4_a2