Abdullah Manna, Saad, سعد, Norjan Hasan Juma, and نورجان. “Stability Analysis of Steady State Solutions of Sine–Gordon Equation”. AL-Rafidain Journal of Computer Sciences and Mathematics 4, no. 2 (June 25, 2025): 11–29. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/csmj/article/view/36676.