Nguyen, Thi Van Anh, et al. “Fuzzy LQG With High-Gain Observer for Robust Control of a Double Inverted Pendulum on a Cart”. Journal of Measurement, Control and Automation, vol. 30, no. 1, Mar. 2026, pp. 1-7, https://mca-journal.org/index.php/mca/article/view/385.