Mouffag Hajim, Rabee, and Yahya Taher Qassim. “Reconfigurable Hardware Based Programmable Digital Circuit Design for a Rotational Stepper Motor”. Al-Rafidain Engineering Journal (AREJ) 16, no. 1 (February 28, 2008): 15–24. Accessed August 7, 2025. https://ojs.uomosul.edu.iq/index.php/arej/article/view/27300.