%0 Journal Article %A Eric Mendelsohn %T An Elementary Characterization of the Category of Partly Ordered Sets. %J Mathematische Zeitschrift %D 1971 %P 111-116 %V 122 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1971__122_171587/ %F MZ_1971__122_171587