G. H. Ibraheem, “Solving System of Linear Fredholm Integral Equations of Second Kind Using Open Newton-Cotes Formulas”, IHJPAS, vol. 24, no. 2, May 2017, Accessed: Mar. 26, 2025. [Online]. Available: https://jih.uobaghdad.edu.iq/index.php/j/article/view/763