On the free boundary problem for a predator-prey model with fear effect. Gulf Journal of Mathematics, [S. l.], v. 19, n. 1, p. 102–116, 2025. DOI: 10.56947/gjom.v19i1.2168. Disponível em: https://gjom.org/index.php/gjom/article/view/2168. Acesso em: 27 aug. 2026.