T. S. Mohamed, and H. M. Elgadi. “A New Sixth-Order Runge - Kutta - Nystro ̈m Method for Special Second Order Ordinary Differential Equations”. Journal of Pure & Applied Sciences 20, no. 4 (December 25, 2021): 72–75. Accessed July 17, 2024. https://sebhau.edu.ly/journal/jopas/article/view/1685.