Omran, H. H. “Solutins of Systems for the Linear Fredholm-Volterra Integral Equations of the Second Kind”. Ibn AL-Haitham Journal For Pure and Applied Sciences 23, no. 2 (May 31, 2017): 200–206. Accessed August 14, 2024. https://jih.uobaghdad.edu.iq/index.php/j/article/view/1022.