Khalleefa. A. Salem, “Design of PID Controller used Ziegler-Nichols technique (Robust Control)”, Sharwes Sci J, vol. 5, no. 2, pp. 1–14, Jul. 2025, Accessed: Jun. 27, 2026. [Online]. Available: https://journ.nu.edu.ly/index.php/sharws/article/view/275