%0 Journal Article %A Sofia Giuffrè %A Attilio Marcianò %T Duality minimax and applications %J Minimax theory and its applications %D 2021 %V 6 %N 2 %U http://geodesic.mathdoc.fr/item/MTA_2021_6_2_a11/ %F MTA_2021_6_2_a11