ALMEIDA PEREIRA, Orlando J. B.; MOITINHO DE ALMEIDA, Jose P. Adaptive refinement for a local error bound based on duality. Computer Assisted Methods in Engineering and Science, [S. l.], v. 10, n. 4, p. 565–574, 2023. Disponível em: https://cames3.ippt.pan.pl/index.php/cames/article/view/1065. Acesso em: 12 jan. 2025.