H. SADOON, L. On Solutions of a Quadratic Integral Equation of Urysohn Type. Journal of Education and Science, [S. l.], v. 27, n. 1, p. 92–96, 2014. DOI: 10.33899/edusj.2014.161560. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41428. Acesso em: 10 sep. 2025.