Thejel, R. H., H. A. Hairik, and M. A. Alwan. “Simulation and Experimental Verification of a HB-Type Vernier Motor”. Engineering, Technology & Applied Science Research 3, no. 1 (February 11, 2013): 338–344. Accessed April 6, 2025. https://mail.etasr.com/index.php/ETASR/article/view/195.