1. Harris, N. G. 1994. Increased Realism in Modelling Public Transport Services, PTRC 22nd European Transport Forum stream H pp. 1-12, Warwick, UK.
2. A Study of Train Dwelling Time at the Hong Kong Mass Transit Railway System;Lam;Jnl. Adv. Transpn.,1998
3. Railway Consultancy. 1996. The Impact of Stepping Distance on Train Boarding and Alighting Times, report for Crossrail project.
4. Rosser, J. 2000. Alighting and Boarding Time Algorithm for London Stations, Technical Note 94, Thameslink 2000 project.