M. KHLAF, B.; GHANIM M.S. ABDULLAH, G. Modifying Runge – Kutta methods with higher order derivative approximations. Journal of Education and Science (JES), [S. l.], v. 19, n. 2, p. 84–98, 1970. DOI: 10.33899/edusj.1970.162998. Disponível em: https://ojs.uomosul.edu.iq/index.php/edusj/article/view/24094. Acesso em: 6 aug. 2025.