Ghani, M. F., R. Ghazali, H. Izzuan Jaafar, C. C. Soon, Y. Md Sam, and Z. Has. “Improved Third Order PID Sliding Mode Controller for Electrohydraulic Actuator Tracking Control”. Journal of Robotics and Control (JRC), vol. 3, no. 2, Feb. 2022, pp. 219-26, doi:10.18196/jrc.v3i2.14236.