Lurang, K., T. Jitwang, and D. Puangdownreong. “Optimal PID Controller Design for Electric Vehicle Speed Control System using Whale Optimization Algorithm”. Journal of Advanced Development in Engineering and Science, vol. 15, no. 44, Feb. 2026, pp. 37-57, https://ph03.tci-thaijo.org/index.php/pitjournal/article/view/3693.