1. Banks, J., Hansford, D.C.: Examination of surface cracks in carbon and manganese steel rails by the eddy current technique. Br. J. NDT 18, 171–174 (1976)
2. Aknin, P., Placko, D., Ayasse, J.B.: Eddy current sensor for the measurement of a lateral displacement. Applications in the railway domain. Sens. Actuators A 31(1–3), 17–23 (1992)
3. Hensel, S., Strauss, T., Marinov, M.: Eddy current sensor based velocity and distance estimation in rail vehicles. IET Sci. Meas. Technol. 9(7), 875–881 (2015)
4. Engelberg, T., Mesch, F.: Eddy current sensor system for non-contact speed and distance measurement of rail vehicles. In: Computers in Railways VII. WIT Press (2000)
5. Geistler, A., Bohringer, F.: Robust velocity measurement for railway applications by fusing eddy current sensor signals. In: Conference Proceedings, 2004 IEEE Intelligent Vehicles Symposium, pp. 664–669