Shuker Jameel G. Approximate Solution for Nonlinear System of Integro-Differential Equations of Volterra Type with Boundary Conditions. EDUSJ [Internet]. 2019 Mar. 1 [cited 2025 Aug. 6];28(1):47-61. Available from: https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23451