Veröffentlichungen (Auswahl)
Public Private Partnership (PPP) in the German Public Real Estate Sector, Assets industry trends, Market Players
Alfen, Hans Wilhelm/ Leupold, Andreas in: Germany Real Estate Yearbook 2007; Europe Real Estate Publishers B.V., S 206-213, Oktober, 2006
Risk Profiles of Different Privatization and PPP Models in the Road sector (Profils de risqué de différents modèles de privatization et de partenariat public-privé dans le secteur routier)
Alfen, Hans Wilhelm/ Leupold, Andreas in: Roads, 4.2006, World Road association (PIARC), S 24-36, September, 2006
The emergence of PPP Task Forces and their influence on project delivery in Germany
Alfen, Hans Wilhelm/ Fischer, Katrin/ Jungbecker, Andrea in: International Journal of Project Management; Volume 24; Issue 7; Governance Issues in Public Private Partnerships; October 2006; pp. 539–547
Privatisierungsoptionen für das deutsche Autobahnnetz
Alfen, Hans Wilhelm/ Heymann, Eric/ Tegner, Henning in: Deutsche Bank Research, 24. April 2006