%0 Journal Article %A Fred Richman %A David M. Arnold %T Field-independent representations of partially ordered sets. %J Forum mathematicum %D 1992 %P 349-358 %V 4 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/FORUM_1992__4_6_141679/ %F FORUM_1992__4_6_141679