Differential Equations & Applications · Volume 9, Issue 1 Minimization principle in ordered Banach spaces and application via Ekeland's variational principle 09-08 Pages 99-104 DOI 10.7153/dea-09-08 Downloads Short PDF Full PDF PNG Authors Amina Boucenna Mabrouk Briki Toufik Moussaoui Donal O'Regan Keywords critical point Ekeland's variational principal cone Riesz-Banach space minimization principle Subject classes 35B38 47L07