Chen, D. J. L., J. C. Chang, and C. H. Cheng. “Higher Order Composition Runge-Kutta Methods”. Tamkang Journal of Mathematics 39, no. 3 (September 30, 2008): 199–211. Accessed April 25, 2024. https://journals.math.tku.edu.tw/index.php/TKJM/article/view/12.