1. Hodge VJ, O’Keefe S, Weeks M, Moulds A (2015) Wireless sensor networks for condition monitoring in the railway industry: a survey. IEEE Trans Intell Transp Syst 16(3):1088–1106
2. Aw E (2007) Low cost monitoring system to diagnose problematic rail bed: case study of mud pumping site. Ph.D. dissertation, Massachusetts Institute of Technology, Cambridge, MA, USA
3. Baum RL, Godt JW, Harp EL, McKenna JP (2005) Early warning of landslides for rail traffic between Seattle and Everett. In: Proceedings of the landslide risk management, Washington, USA, pp 731–740
4. Anastasopoulos A, Bollas K, Papasalouros D, Kourousis D (2010) Acoustic emission on-line inspection of rail wheels. In: Proceedings of the 29th European conference on acoustic emission testing, Wien, Austria, pp 1–8
5. Thakkar N, Steel JA, Reuben RL (2010) Rail-wheel interaction monitoring using acoustic emission: a laboratory study of normal rolling signals with natural rail defects. Mech Syst Signal Process 24(1):256–266