R.M.Kuraz, Yhya, and Maher M.F. Algreer. “Design Fuzzy Self Tuning of PID Controller for Chopper-Fed DC Motor Drive”. Al-Rafidain Engineering Journal (AREJ) 16, no. 2 (April 28, 2008): 54–66. Accessed August 8, 2025. https://ojs.uomosul.edu.iq/index.php/arej/article/view/26861.