F. . K. I. Ahmed, F. A. Kubba, and S. . S. Muhsun, “MATHEMATICAL ANALYSIS OF 2-D STEADY SEEPAGE FLOW AND THE BEHAVIOR OF CONTAMINATES TRANSPORTATION THROUGH HOMOGENEOUS EARTH DAM USING COMSOL SOFTWARE”, J. eng. sustain. dev., vol. 24, no. 5, pp. 19–27, Sep. 2020, doi: 10.31272/jeasd.24.5.3.