Voir la notice de l'article provenant de la source Heldermann Verlag
@article{JCA_1997_4_2_a1, author = {R. A. Poliquin and R. T. Rockafellar}, title = {Proto-Derivatives of {Partial} {Subgradient} {Mappings}}, journal = {Journal of convex analysis}, pages = {221--234}, publisher = {mathdoc}, volume = {4}, number = {2}, year = {1997}, url = {http://geodesic.mathdoc.fr/item/JCA_1997_4_2_a1/} }
R. A. Poliquin; R. T. Rockafellar. Proto-Derivatives of Partial Subgradient Mappings. Journal of convex analysis, Tome 4 (1997) no. 2, pp. 221-234. http://geodesic.mathdoc.fr/item/JCA_1997_4_2_a1/