%0 Journal Article %A Marco Cirant,Levon Nurbekyan %T The Variational Structure and Time-Periodic Solutions for Mean-Field Games Systems %J Minimax theory and its applications %D 2018 %V 3 %N 2 %U http://geodesic.mathdoc.fr/item/MTA_2018_3_2_a2/ %F MTA_2018_3_2_a2