Jameel, Ghada. “Existence and Uniqueness Solution of Second Order Nonlinear Integro-Differential Equations With Boundary Conditions”. Journal of Education and Science (JES) 21, no. 2 (June 1, 2008): 155–163. Accessed August 7, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/24431.