Rahmati, Mohammad Reza, and L. A. Rodríguez-Morales. “The Stability of Periodic Orbits for Kawahara Equation”. Contemporary Mathematics 6, no. 2 (April 16, 2025): 2409–2431. Accessed December 18, 2025. https://ojs.wiserpub.com/index.php/CM/article/view/5991.