[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 für die Europäische Konferenz der Verkehrsminister, OECD, April 2006.