On Residual-Based a Posteriori Error Estimators for Lowest-Order Raviart-Thomas Element Approximation to Convection-Diffusion-Reaction Equations. Journal of Computational Mathematics, [S. l.], v. 32, n. 5, p. 522–546, 2018. DOI: 10.4208/jcm.1403-FE4. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/12171. Acesso em: 5 dec. 2025.