@article{JCA_1994_1_1_a5,
     author = {A. Verona and M. E. Verona},
     title = {Epiconvergence and {Epsilon-Subgradients} of {Convex} {Functions}},
     journal = {Journal of convex analysis},
     pages = {087--1},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1994},
     url = {http://geodesic.mathdoc.fr/item/JCA_1994_1_1_a5/}
}