WESTPHAL, Chad; LEEPER, Jackson. Waterborne Disease Dynamics with a River. Mathematics Exchange, [S. l.], v. 19, n. 1, p. 2–15, 2025. DOI: 10.33043/c9yu5f2yznf. Disponível em: https://openjournals.bsu.edu/mathexchange/article/view/6082. Acesso em: 24 apr. 2026.