1. S. S. Kim and C. S. Park, High speed Rail Measurement System of HSR-350x, Journal of the Korean Society for Railway, Korea, 11(2) (2008) 115–119.
2. British Standard, Railway applications/Track-Track geometry quality- Part 1: Characterisation of track geometry and Part 2: Measuring systems-Track recording vehicles, BE EN 13848-1:2003 & BS EN 13848-2:2006.
3. Coenraad Esveld, Modern Railway Track, Second Ed., Esveld Company, Netherlands, (2001).
4. S. S. Kim, C. S. Park and Y. G. Kim, Characteristics of Track Irregularity Measuring System of HSR-350x, Proc. of ACMD, Jeju, Korea, (2008).