%0 Journal Article %A Jankowski, Tadeusz %T Differential Equations in Abstract Cones %J Serdica Mathematical Journal %D 2000 %P 229-244 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_2000_26_3_a3/ %G en %F SMJ2_2000_26_3_a3