Badmus A.M, and Subair A.O. “Implicit Block and Runge- Kutta Type Methods for Solution of Second-Order Ordinary Differential Equations”. Applied Mathematics and Computational Intelligence (AMCI) 13, no. No.1 (February 14, 2024): 109–127. Accessed December 22, 2024. https://ejournal.unimap.edu.my/index.php/amci/article/view/229.