Le, Vinh An, and Xuan Tung Nguyen. “The Effect of Cracks on the Free Vibration of a Plate With Parabolic Thickness”. Engineering, Technology & Applied Science Research 13, no. 4 (August 9, 2023): 11100–11105. Accessed June 30, 2024. https://etasr.com/index.php/ETASR/article/view/5923.