@article{MTA_2018_3_1_a9,
     author = {Nguyen Xuan Tan and Nguyen Quynh Hoa,Nguyen Ba Minh},
     title = {Quasi-Equilibrium {Problems} and {Fixed} {Point} {Theorems} of the {Sum} of l.s.c. and u.s.c. {Mappings}},
     journal = {Minimax theory and its applications},
     year = {2018},
     volume = {3},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MTA_2018_3_1_a9/}
}