SADIQ, D. A. S.; SAEED, S. H.; MUNEER, W. A. Design and simulation of a PI controller system with frequency response. Science Journal of University of Zakho, [S. l.], v. 4, n. 2, p. 269–274, 2016. Disponível em: https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/360. Acesso em: 29 mar. 2024.