@article{MTA_2018_3_1_a3,
     author = {Jean Saint Raymond},
     title = {A new minimax theorem for linear operators},
     journal = {Minimax theory and its applications},
     year = {2018},
     volume = {3},
     number = {1},
     zbl = {1395.49006},
     url = {http://geodesic.mathdoc.fr/item/MTA_2018_3_1_a3/}
}