S. Khalidah, M. Z. Ahmad, G. M. Romalan, and M. Z. Md Arap, “Comparative Analysis of Double Stator Permanent Magnet Flux-Switching Machines with Segmented Inner Stator and Non-Segmented Inner Stator”, JTEC, vol. 10, no. 1-2, pp. 37–41, Jan. 2018.