(1) K. Takigawa, N. Okada, N. Kuwabara, A. Kitamura, and F. Yamamoto:“A Development of Smart Power Conditioner for Value Added PV Application”, The Papers of Technical Meeting on Frontier Technology and Engineering, IEE Japan, FTE-01-3, pp. 13-16 (2001) (in Japanese)
滝川 清·岡田有功·桑原信紀·北村章夫·山本文雄:「太陽光発電の付加価値向上:多機能インバータの開発」, 電気学会新エネルギー·環境研資, FTE-01-3, pp. 13-16 (2001)
(2) H. Sugihara, S. Nishikawa, and Y. Kimura:“Electrical Observation of the Hybrid System using Photovoltaic and Sodium-sulpher Battery”, Proc. of JSES/JWEA Joint Conference (2001), No. 4, pp. 13-16 (2001) (in Japanese)
杉原裕征·西川省吾·木村良成:「太陽電池とNAS電池のハイブリッドシステムの電気特性」, 平成13年度日本太陽エネルギー学会·日本風力エネルギー協会合同研究発表会講演論文集, No. 4, pp. 13-16 (2001)
(3) H. Miyauchi, K. Eguchi, and H. Hayashi:“Application of SMES to Power Quality Improvement”, Proc. of the Thirteenth Annual Conference of Power & Energy Society, IEE Japan, No. 10, pp. 110-115 (2002) (in Japanese)