Tran, V.-T., B.-S. Nguyen, T. Vu, and N.-T. Bui. “Trajectory Tracking Control of Pneumatic Cylinder-Actuated Lower Limb Robot for a Gait Training System”. Engineering, Technology & Applied Science Research, vol. 14, no. 4, Aug. 2024, pp. 15367-72, doi:10.48084/etasr.7733.