1. CityMobil, (2012) website: www.citymobil-project.eu.
2. Netmobil, (2002): New Transport System Concepts for Enhanced and Sustainable Personal Urban Mobility. European 5th Framework Program 2002-2005. www.netmobil.org.
3. LUTR, (2002): Land Use and Transportation Research: Policies for the City of Tomorrow. European 5th Framework Program 2002-2005. www.lutr.net.
4. CyberMove, (2004) project: Deliverable 3.2: Safe sites and systems: J.P. van Dijke and M.M. Janse. October 2004.
5. Code of Practice, (2006) for the design and evaluation of ADA systems. RESPONSE III project. October 2006.