1. KEPCO Annual Report Brochure, (2004).
2. Transmission and Distribution World;Yoon,2005
3. T. Masuda, H. Yumura, M. Watanabe, Y. Ashibe, C. Suzawa, M. Hirose, S. Honjo, T. Uchiyama, K. Eto, S. Sakuma, Y.Takahashi, H. Suzuki, in: Proc. of National Convention Record IEEJ (2003). p. 7-094.
4. T. Masuda, Y. Ashibe, C. Suzawa, M. Hirose, S. Honjo, Y. Sato, T. Uchiyama, Y.Takahashi, H. Suzuki, in: Proc. of the Thirteenth Annual Conference of Power and Energy Society. IEEJ (2002). p. 354.
5. K. Yamazaki, S. Kobayashi, T. Kato, K. Ohkura, M. Ueyama, J. Fujikami, N. Ayai, E. Ueno, M. Kikuchi, K. Hayashi, K. Sato, SEI Technical Review No. 164 (2004). p. 36.