On the Monotonicity of $Q^2$ Spectral Element Method for Laplacian on Quasi-Uniform Rectangular Meshes. Communications in Computational Physics, [S. l.], v. 35, n. 1, p. 160–180, 2024. DOI: 10.4208/cicp.OA-2023-0206. Disponível em: https://global-sci.com/index.php/cicp/article/view/7229. Acesso em: 5 dec. 2025.