JASIM MOHAMMED, A. Solution of Higher Order Linear Freadholm Integro-differential Equation by Elementary Approximation. Journal of Education and Science, [S. l.], v. 22, n. 2, p. 147–154, 2009. DOI: 10.33899/edusj.2009.57703. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41609. Acesso em: 10 sep. 2025.