SHISHKIN, Grigorii. Optimal difference schemes on piecewise‐uniform meshes for a singularly perturbed parabolic convection‐diffusion equation. Mathematical Modelling and Analysis, [S. l.], v. 13, n. 1, p. 99–112, 2008. DOI: 10.3846/1392-6292.2008.13.99-112. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/6994. Acesso em: 9 may. 2025.