Optimal and Stability Analysis of the Co-Infections Disease Mathematical Model. Journal of Nonlinear Modeling and Analysis, [S. l.], v. 7, n. 3, p. 840–867, 2025. DOI: 10.12150/jnma.2025.840. Disponível em: https://global-sci.com/index.php/jnma/article/view/13835. Acesso em: 6 dec. 2025.