1. [1] EN 50119:2001, Railway applications - Fixed installations - Electric traction overhead contact lines, CENELEC, 2001.
2. [2] EN 50367:2002, Railway applications - Current collection systems - Technical criteria for the interaction between pantograph and overhead line (to achieve free access), CENELEC, 2002.
3. [3] Shunichi, K., Takahiro, F. and Kazuyoshi, N., "Diagnosis of Overhead Contact Line based on Contact Force," Quarterly Report of RTRI, Vol.47, No.1, pp.39-45, 2006.
4. [4] Mitsuru, I., Sei, N. and Takayuki, U., "A precise contact force measuring method for overhead catenary system," WCRR 2001, 2001.
5. [5] Sung-Il, S., Young-Hyun, C., Jin-Yong, M., Choon-Soo, p.and Kin-Hwan, K., "A Study on the Measurement of Contact Force of Pantograph on High Speed Train," ICCAS2005, Korea, 2005.