Urban transport 11 : urban transport and the environment in the 21st century. : 11th international conference on urban transport and the environment in the 21st century : 2005, Algarve, Portugal. (WIT Transactions on the Built Environment ; 77)
Urban transport 11 : urban transport and the environment in the 21st century. : 11th international conference on urban transport and the environment in the 21st century : 2005, Algarve, Portugal.