Nguyen, Tan Phat, Van Dong Hai Nguyen, Phong Luu Nguyen, Minh Tam Nguyen, and Mircea Ivanescu. “Application of Frequency Criterion in Designing Controller for Uncertain Balancing Robot”. Journal of Technical Education Science 12, no. Special Issue 01 (January 30, 2017): 35–41. Accessed April 7, 2026. https://www.jte.edu.vn/index.php/jte/article/view/475.