BLOCK-CENTERED UPWIND DIFFERENCE ON CHANGING MESHES FOR NUMERICAL SIMULATION OF SEEPAGE FLOW: http://dx.doi.org/10.17654/0972096023010. Far East Journal of Applied Mathematics, [S. l.], v. 116, n. 2, p. 173–213, 2023. Disponível em: https://pphmjopenaccess.com/fejam/article/view/125. Acesso em: 5 jan. 2026.