Variable Mesh Finite Difference Method for Self-Adjoint Singularly Perturbed Two-Point Boundary Value Problems. Journal of Computational Mathematics, [S. l.], v. 28, n. 5, p. 711–724, 2019. DOI: 10.4208/jcm.1003-m2809. Disponível em: https://global-sci.com/index.php/JCM/article/view/12007. Acesso em: 6 dec. 2025.