NAGARAJ, B.; VIJAYAKUMAR, P. A Comparative Study of PID Controller Tuning Using GA, EP, PSO and ACO. Journal of Automation, Mobile Robotics and Intelligent Systems, [S. l.], v. 5, n. 2, p. 42–48, 2013. Disponível em: https://jamris.d.tomp.pl/index.php/JAMRIS/article/view/163. Acesso em: 15 may. 2025.