Al-Humedi, Hameeda O., and Zahraa Adnan jameel. 2020. “Combining Cubic B-Spline Galerkin Method With Quadratic Weight Function for Solving Partial Integro-Differential Equations”. Journal of Al-Qadisiyah for Computer Science and Mathematics 12 (1):Math Page 9 – 20. https://doi.org/10.29304/jqcm.2020.12.1.660.