%0 Journal Article %A Zelina, Miron %T Selfduality of the system of convex subsets of a partially ordered set %J Commentationes Mathematicae Universitatis Carolinae %D 1993 %P 593-595 %V 34 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1993__34_3_a22/ %G en %F CMUC_1993__34_3_a22