Discrete Approximations for Singularly Perturbed Boundary Value Problems with Parabolic Layers, III. Journal of Computational Mathematics, [S. l.], v. 14, n. 3, p. 273–290, 1996. Disponível em: https://global-sci.com/index.php/JCM/article/view/11217. Acesso em: 6 dec. 2025.