%0 Journal Article %A A. J. B. Lopes-Pinto %T On a New Result on the Existence of Zeros Due to Ricceri %J Journal of convex analysis %D 1998 %P 057-062 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JCA_1998_5_1_a4/ %F JCA_1998_5_1_a4