Ahmed Al-Samarraie, Shibly, Bashar Fateh Midhat, and Ivan Isho Gorial. “NONLINEAR INTEGRAL CONTROL DESIGN FOR DC MOTOR SPEED CONTROL WITH UNKNOWN AND VARIABLE EXTERNAL TORQUE”. Journal of Engineering and Sustainable Development 20, no. 4 (July 1, 2016): 19–33. Accessed April 11, 2025. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/578.