Chee Pen, Chia, and Zainal Abdul Aziz. “Results Relating to Hirota Method and Singularity Analysis on Some Nonlinear Waves Equations”. Journal of Science and Mathematics Letters 4, no. 1 (January 19, 2019): 75–83. Accessed April 24, 2024. https://ejournal.upsi.edu.my/index.php/JSML/article/view/359.