POPA, Valeriu. A Generalization of Meir-Keeler Type Common Fixed Point Theorem For Four Noncontinuous Mappings. Sarajevo Journal of Mathematics, [S. l.], v. 1, n. 1, p. 135–142, 2024. DOI: 10.5644/SJM.01.1.12. Disponível em: https://www.sjm.anubih.ba/index.php/sjm/article/view/458. Acesso em: 26 jan. 2026.