OJO, M. M; AKINPELU, F. O. Lyapunov Functions and Global Properties of SEIR Epidemic Model. International Journal Of Chemistry, Mathematics And Physics(IJCMP), [S. l.], v. 1, n. 1, 2017. Disponível em: https://journal-repository.com/index.php/ijcmp/article/view/3316.. Acesso em: 16 apr. 2025.