%0 Journal Article %A B. Jiménez %A V. Novo %T Alternative Theorems and Necessary Optimality Conditions for Directionally Differentiable Multiobjective Programs %J Journal of convex analysis %D 2002 %P 97-116 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_2002_9_1_JCA_2002_9_1_a4/ %F JCA_2002_9_1_JCA_2002_9_1_a4