Le VA, Nguyen XT. The Effect of Cracks on the Free Vibration of a Plate with Parabolic Thickness. Eng. Technol. Appl. Sci. Res. [Internet]. 2023 Aug. 9 [cited 2025 Apr. 19];13(4):11100-5. Available from: https://mail.etasr.com/index.php/ETASR/article/view/5923