[11] "Cost effectiveness of CO2 mitigation in transport - An outlook and comparison with measures in other sectors", CE Delft voor de Europese Conferentie van ministers van Verkeer, OESO, april 2006.
[11] «Cost effectiveness of CO2 mitigation in transport - An outlook and comparison with measures in other sectors», CE Delft pour la conférence européenne des ministres des Transports, OCDE, avril 2006.