Lee, Byeong Chul, Byoung Wook Jo, Cheon Ho Song, and Ki Chan Kim. “Notch Optimization Design of Rotor for Cogging Torque Reduction of the IPMSM”. International Journal of Advanced Science and Technology 28, no. 4 (September 27, 2019): 239 - 245. Accessed May 18, 2024. http://sersc.org/journals/index.php/IJAST/article/view/348.