Awah, C.C., and O.I. Okoro. “Fault-Tolerant Capability and Torque-Speed Measurements of Permanent Magnet Brushless AC Machines”. Nigerian Journal of Technological Development 16, no. 4 (November 11, 2019): 193–200. Accessed October 9, 2026. https://www.ajol.info/index.php/njtd/article/view/191118.