1. A speed-concentration relationship for bi-directional crowd movement with strong interaction;AlGadhi,2001
2. Forecasting the flow of people (in Japanese);Ando;Railw. Res. Rev.,1988
3. Understanding and planning for different spectator crowds;Berlonghi;Safety Sci.,1995
4. Department for Culture, Media and Sport (DCMS), 1997. Guide to Safety at Sports Grounds (the Green Guide), fourth ed. HMSO, ISBN 0113000952.
5. Major crowd catastrophes;Dickie;Safety Sci.,1995