Ben Saoud, Insaf, Haitham Makhzoum, and Kheria Msaik. “Existence of at Least One Positive Continuing Solution of Urysohn Quadratic Integral Equation by Schauder Fixed-Point Theorem”. Libyan Journal of Science &Technology 13, no. 2 (September 18, 2022). Accessed April 25, 2026. https://next.fannak.com/index.php/LJST/article/view/2318.