Hung, Tran Quang, Tran Minh Tu, and Do Minh Duc. “Analytical Solution for Free Vibration Analysis of GPL-RP Beam Integrated With Piezoelectric Layers”. Vietnam Journal of Mechanics 44, no. 4 (December 30, 2022): 392–404. Accessed November 8, 2025. https://vjmech.vast.vn/vjmech/article/view/17912.