1. An Experimental Study on Conditioning Effect in Vacuum Gap
2. (2) Investigation Technical Committee for Recent appraisal method in Vacuum Switchgear: “Trends of example of use and appraisal method in special purpose of Vacuum Switchgear”, IEEJ Technical Report, No. 600, p. 60 (1996) (in Japanese)
3. 真空遮断器·開閉器の最近の評価法調査専門委員会:「真空遮断器·開閉器の特殊用途での使用例と評価法の動向」, 電気学会技術報告, No. 600, p. 60 (1996)
4. (3) Investigation Technical Committee for High Voltage Vacuum Circuit Breaker: “Making to High Voltage for Vacuum Circuit Breaker and its Application”, IEEJ Technical Report, No. 259, pp. 11-13, 31-32 (1996) (in Japanese)