AGE-STRUCTURED MODEL WITH DELAY FOR THE STUDY OF SCHISTOSOMIASE IN NIGER. International Journal of Numerical Methods and Applications, [S. l.], v. 25, n. 2, p. 377–400, 2025. DOI: 10.17654/0975045225015. Disponível em: https://pphmjopenaccess.com/ijnma/article/view/2912. Acesso em: 5 jan. 2026.