LIMA, P. M.; OLIVEIRA, A. M. Numerical methods and error estimates for a singular boundary‐value problem. Mathematical Modelling and Analysis, [S. l.], v. 7, n. 2, p. 271–284, 2002. DOI: 10.3846/13926292.2002.9637199. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9862. Acesso em: 26 jun. 2025.