%0 Journal Article %A Biagio Ricceri %T On a minimax theorem: an improvement, a new proof and an overview of its applications %J Minimax theory and its applications %D 2017 %V 2 %N 1 %U http://geodesic.mathdoc.fr/item/MTA_2017_2_1_a7/ %F MTA_2017_2_1_a7