A Mathematical Model for the Transmission of Giardiasis Incorporating Resistance Strain and Second Line of Treatment. International Journal of Development Mathematics (IJDM), [S. l.], v. 3, n. 3, p. 132–157, 2026. DOI: 10.62054/ijdm/0303.07. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/372.. Acesso em: 9 sep. 2026.