2 Treffer für Verfasser = "Ennen, David"

• Airport efficiency in Pakistan - a data envelopment analysis with weight restrictions Ennen, David ; Batool, Irem Münster : Institute of Transport Economics, November 2017

• Ride-hailing services in Germany potential impacts on public transport, motorized traffic, and social welfare Ennen, David ; Heilker, Thorsten Münster, Germany : Institute of Transport Economics, January 2020