%0 Journal Article %A Nguyen Xuan Tan %A Nguyen Quynh Hoa,Nguyen Ba Minh %T Quasi-Equilibrium Problems and Fixed Point Theorems of the Sum of l.s.c. and u.s.c. Mappings %J Minimax theory and its applications %D 2018 %V 3 %N 1 %U http://geodesic.mathdoc.fr/item/MTA_2018_3_1_a9/ %F MTA_2018_3_1_a9