%0 Journal Article %A B. S. Mordukhovich %A L. Mou %T Necessary Conditions for Nonsmooth Optimization Problems with Operator Constraints in Metric Spaces %J Journal of convex analysis %D 2009 %P 913-937 %V 16 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_2009_16_3_JCA_2009_16_3_a21/ %F JCA_2009_16_3_JCA_2009_16_3_a21