1. Drawing-up Approaches of Railway Operational Scheme;Ban,1996
2. The timetable problem for railways;Amit;Developments in Operations Research,1971
3. Ministry of Railways. Drawing-up Rules of Train Operational Scheme, 1979.
4. Organization of Train Operation;Changsha Railway University,1980
5. A structured model for rail line simulation and optimization;Petersen;Transportation Science,1982