6Gianmarco Baldinia, Igor Nai Fovinoa, Marcelo Maseraa, et al. An early warning system for detecting GSM-R wireless interference in the high-speed railway infrastructure[J]. International Journal of Critical Infrastructure Protection,2010, 3(3/4) : 140 - 156.
7Trudi Farrington-Darby, Laura Pickup, John R Wilson. Safety culture in railway maintenance[J].Safety Science, 2006, 43(1) : 39 -60.