A Posteriori Error Estimates for a Modified Weak Galerkin Finite Element Approximation of Second Order Elliptic Problems with DG Norm. Journal of Computational Mathematics, [S. l.], v. 39, n. 5, p. 755–776, 2021. DOI: 10.4208/jcm.2006-m2019-0010. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/12480. Acesso em: 6 dec. 2025.