SHUKER JAMEEL, G. Approximate Solution for Nonlinear System of Integro-Differential Equations of Volterra Type with Boundary Conditions. Journal of Education and Science, [S. l.], v. 28, n. 1, p. 47–61, 2019. DOI: 10.33899/edusj.2019.160911. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41588. Acesso em: 10 sep. 2025.