1. 1) T. Ogasawara, T. Ohkubo, M. Natsusaka, Y. Sakamoto, and K. Murakami: T. IEE Japan, MAG-99-97, LD-99-91 (1999)
2. 2) T. Ohkubo, M. Natsusaka, and Y. Sakamoto: T. IEE Japan, MAG-00-175 (2000)
3. 3) Y. Sakamoto, T. Ohkubo, M. Natsusaka, M. Ohta: T. IEE Japan, RM-00-118 (2000)
4. 4) T. Ogasawara, T. Ohkubo, Y. Sakamoto, and K. Murakami: J. Magn. Soc. Japan., 24, No. 4-2, pp. 995-998 (2000)
5. Single-Phase-Input Three-Phase Parametric Motor, Using 120-degree Rotationally Symmetrical Stator.