Fuzzy based Mathematical Model of Measles with Double-Dose Vaccination under Epidemiological Parameter Uncertainty. International Journal of Development Mathematics (IJDM), [S. l.], v. 3, n. 3, p. 307–322, 2026. DOI: 10.62054/ijdm/0303.15. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/402.. Acesso em: 9 sep. 2026.