%0 Journal Article %A Abdeslam Talha %A Mohamed Saad Bouh Elemine Vall %T Strongly nonlinear elliptic unilateral problems without sign %J Revista colombiana de matematicas %D 2021 %P 43-70 %V 55 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RCM_2021_55_1_a3/ %F RCM_2021_55_1_a3