BLOCK-CENTERED UPWIND DIFFERENCE ON CHANGING MESHES FOR NUMERICAL SIMULATION OF SEEPAGE FLOW: http://dx.doi.org/10.17654/0972096023010. FEJAM [Internet]. 2023 Apr. 19 [cited 2026 Jan. 5];116(2):173-21. Available from: https://pphmjopenaccess.com/fejam/article/view/125