Fatima M.A. Al-khafaji and Hussein A. M. Al-Zubaidi 2025. Numerical Modeling-Based Comparison of Leap-Frog and Implicit Crank-Nicolson Schemes for Instantaneous Spill of Pollutant in Rivers. International Journal of Computational and Experimental Science and Engineering. 11, 1 (Mar. 2025). DOI:https://doi.org/10.22399/ijcesen.1190.