PESANTES GRADOS, P. I.; LÓPEZ-CRUZ, R. Mathematical analysis of a symptom-structured epidemic model . Selecciones Matemáticas, [S. l.], v. 8, n. 02, p. 295-315, 2021. DOI: 10.17268/sel.mat.2021.02.07. Disponível em: https://revistas.unitru.edu.pe/index.php/SSMM/article/view/3902. Acesso em: 4 may. 2024.