@article{JCA_2009_16_3_JCA_2009_16_3_a21,
     author = {B. S. Mordukhovich and L. Mou},
     title = {Necessary {Conditions} for {Nonsmooth} {Optimization} {Problems} with {Operator} {Constraints} in {Metric} {Spaces}},
     journal = {Journal of convex analysis},
     pages = {913--937},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/JCA_2009_16_3_JCA_2009_16_3_a21/}
}