Munthir Mohammed Mahfouth, and Hafed Efhejj. “Fixed Versus Fuzzy Self-Tuning PID Speed Control of a Geared DC Motor: Experimental Identification and Robustness Evaluation”. African Journal of Advanced Pure and Applied Sciences, vol. 5, no. 3, Sept. 2026, pp. 376-8, https://aaasjournals.com/index.php/ajapas/article/view/2164.