%0 Journal Article %A Massimiliano Ferrara %A Maria Viorica Stefanescu %T Optimality Conditions and Duality in Multiobjective Programming With $(Phi, ho)$-Invexity %J Yugoslav journal of operations research %D 2008 %P 153 %V 18 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/YJOR_2008_18_2_a1/ %G en %F YJOR_2008_18_2_a1