Optimal Control and Cost Effectiveness Analysis for the Transmission Dynamics of Yaws Infection. International Journal of Development Mathematics (IJDM), [S. l.], v. 1, n. 2, p. 038–060, 2024. DOI: 10.62054/ijdm/0102.04. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/52.. Acesso em: 17 apr. 2026.