1. (1) IEE Japan: “Latest Technologies of Electric Railway”, CORONA PUBLISHING CO., LTD. Tokyo Japan, pp. 138-139, 164-185 (2000-9) (in Japanese)
2. (2) Y. Fujii and M. Shimizu: “Investigation of Allowable Contact-loss Ratio Related to Contact Strip Wear”, J-Rail’00, No. 1409, pp. 263-266 (2000-12) (in Japanese)
3. (6) K. Nezu, S. Kusumi, and T. Fukutani: “Comparison of Measuring Results between Contact Loss Measurements by AC Current and by Arc Light”, J-Rail’00, No. 1406, pp. 255-256 (2000-12) (in Japanese)
4. (7) Y. Fujii: “Simulation of Contact Loss for Trains with High Voltage Bus Cables under DC Feeding System”, IEEJ Trans. IA, Vol. 123, No. 5, pp. 568-574 (2003-5) (in Japanese)
5. (9) Y. Fujii: “Arc Extinction Time Caused by Contact Loss under High Voltage Bus Cables”, J-Rail’01, S8-1-2, (2001-12) (in Japanese)