%0 Journal Article %A Vălcan, Dumitru %T Modules with the direct summand sum property %J Czechoslovak Mathematical Journal %D 2003 %P 277-287 %V 53 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2003__53_2_a4/ %G en %F CMJ_2003__53_2_a4