HACIA, L. Projection methods for integral equations in epidemic. Mathematical Modelling and Analysis, [S. l.], v. 7, n. 2, p. 229–240, 2002. DOI: 10.3846/13926292.2002.9637195. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9847. Acesso em: 10 may. 2025.