Quasi-Equilibrium Problems and Fixed Point Theorems of the Sum of l.s.c. and u.s.c. Mappings. Minimax Theory and its Applications, [S. l.], v. 3, n. 1, p. 57–72, 2018. Disponível em: https://journalmta.com/index.php/jmta/article/view/37. Acesso em: 30 jun. 2026.