@article{JCA_2009_16_1_JCA_2009_16_1_a8,
     author = {P. Q. Khanh and N. D. Tuan},
     title = {Optimality {Conditions} using {Approximations} for {Nonsmooth} {Vector} {Optimization} {Problems} under {General} {Inequality} {Constraints}},
     journal = {Journal of convex analysis},
     pages = {169--186},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/JCA_2009_16_1_JCA_2009_16_1_a8/}
}