La, Ngoc-Tuan, Thanh-Toan Nguyen, and Van-Du Nguyen. “A Comparative Study on the Two Vibration Driven Locomotion Systems in Various Friction Levels”. <i>Vietnam Journal of Mechanics</i> 43, no. 2 (April 19, 2021): 121–137. Accessed November 8, 2025. https://vjmech.vast.vn/vjmech/article/view/15662.