SHISHKIN, G. I. Robust novel high‐order accurate numerical methods for singularly perturbed convection‐diffusion problems. Mathematical Modelling and Analysis, [S. l.], v. 10, n. 4, p. 393–412, 2005. DOI: 10.3846/13926292.2005.9637296. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9694. Acesso em: 26 jun. 2025.