OTHMAN, Mohamed Ibrahim Ahmed, Mohamed Galal Sayed ALI, and Roushdi Mohamed FAROUK. “Normal Mode Analysis of the Nonlinear Acoustic Wave Equation”. Walailak Journal of Science and Technology (WJST) 11, no. 4 (October 31, 2013): 341–347. Accessed July 11, 2026. https://wjst.wu.ac.th/index.php/wjst/article/view/366.