H. Abdullah, Noor, and Shahab A.Hassan. “Finite Difference Methods for Solving Linear and Nonlinear Ellipse Equations”. Samarra Journal of Pure and Applied Science 7, no. 1 (March 30, 2025): 265–281. Accessed October 31, 2025. https://www.sjpas.com/index.php/sjpas/article/view/992.