@article{1077375909, author = {Rockafellar, R. T.}, title = {Helly's theorem and minima of convex functions}, journal = {Duke Math. J.}, volume = {32}, number = {1}, year = {1965}, pages = { 381-397}, language = {en}, url = {http://dml.mathdoc.fr/item/1077375909} }
Rockafellar, R. T. Helly’s theorem and minima of convex functions. Duke Math. J., Tome 32 (1965) no. 1, pp. 381-397. http://gdmltest.u-ga.fr/item/1077375909/