@article{00988181, title = {Optimality conditions for problems with set-valued objectives.}, journal = {Journal of Applied Analysis}, volume = {2}, year = {1996}, pages = {183-201}, doi = {10.1515/JAA.1996.183}, zbl = {0874.49017}, language = {en}, url = {http://dml.mathdoc.fr/item/00988181} }
El Abdouni, B.; Thibault, L. Optimality conditions for problems with set-valued objectives.. Journal of Applied Analysis, Tome 2 (1996) pp. 183-201. doi : 10.1515/JAA.1996.183. http://gdmltest.u-ga.fr/item/00988181/