@article{MTA_2018_3_1_a4,
     author = {D. Inoan,J. Kolumb\'an},
     title = {On {Quasi-Equilibrium} {Problems} with {Trifunctions}},
     journal = {Minimax theory and its applications},
     year = {2018},
     volume = {3},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MTA_2018_3_1_a4/}
}