A. Manna, Saad, and Haneen T. Jassim. “Numerical Solution for Sine-Gordon System in One Dimension”. AL-Rafidain Journal of Computer Sciences and Mathematics 7, no. 2 (June 3, 2010): 47–59. Accessed December 18, 2025. https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36368.