1. Dou, Y., Guo, Y. and Zhu, J. 2006. “Study of a hybrid excitation synchronous generator using three-dimensional magnetic field finite element analysis. Proceedings of the IEEE International Magnetics Conference. 2006, San Diego, CA. pp.198–199.
2. Zhang, F., Bai, H., Gruenberger, H. P. and Nolle, E. 2007. “Comparative study on claw pole electrical machine with different structure. 2nd IEEE Conference on Industrial Electronics and Applications. 2007, Harbin, China. pp.636–640.
3. Zhang, F. and Bai, H. 2008. “Study on a new type of permanent magnet claw pole motor with outer rotor. Power System Technology and IEEE Power India Conference. 2008, New Delhi, India. pp.1–5.
4. Jurca, F., Martis, C., Birou, I. and Biro, K. 2008. “Analysis of permanent magnet claw-pole synchronous machine. 11th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM 2008). 2008, Brasov, Romania. pp.75–80.
5. Sato, Y., Torii, S., Watanabe, E. and Kikukawa, K. 2008. “Evaluation of superconducting claw motor using three dimensional magnetic field analysis. Proceedings of the 2008 International Conference on Electrical Machines. 2008, Vilamoura, Portugal. pp.75–80.