%0 Journal Article %A Avgerinos, Evgenios P. %A Papageorgiou, Nikolaos S. %T Extremal solutions and relaxation for second order vector differential inclusions %J Archivum mathematicum %D 1998 %P 427-434 %V 34 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1998__34_4_a1/ %G en %F ARM_1998__34_4_a1