Zhang, Yong, Zengqiang Chen, Mingwei Sun, and Xinghui Zhang. “Trajectory Tracking Control of a Quadrotor UAV Based on Sliding Mode Active Disturbance Rejection Control”. Nonlinear Analysis: Modelling and Control 24, no. 4 (June 27, 2019): 545–560. Accessed April 26, 2025. https://journals.vu.lt./nonlinear-analysis/article/view/12961.