A Food Chain Model with a Protection Zone. Journal of Partial Differential Equations, [S. l.], v. 38, n. 3, p. 352–375, 2025. DOI: 10.4208/jpde.v38.n3.7. Disponível em: https://www.global-sci.com/index.php/jpde/article/view/22663. Acesso em: 5 dec. 2025.