Zhu Jun, Cao Di, Li Guanghua, Zhang Zhenyi, Shuaihui Li, and Song Dandan. “Research on Topology of Axial Flux Permanent Magnet Synchronous Generator”. The Applied Computational Electromagnetics Society Journal (ACES), vol. 35, no. 1, Jan. 2020, pp. 111-8, https://journals.riverpublishers.com/index.php/ACES/article/view/8049.