Veröffentlichungen (Auswahl)
Transport Infrastructure Investment: Options for Efficiency
Alfen, Hans Wilhelm/ Karlström, Urban (Chair)/ Karlaftis, Matthew / Nilsson, Jan-Eric (Principal Report Editor) /Stacey, Colin (Principal Report Editor and Secretariat) all Editorial Committee Members et al. as Contributors; Joint OECD/ECMT Transport Research Centre; Working Group on Transport Infrastructure Investment, Funding Future Infrastructure Needs, October 2007
First PPP Steps in German Health Care
Alfen, Hans Wilhelm/ Daube, Dirk in: European Public Private Partnership Law Review; Vol. 4; No. 4 2007, Berlin: Lexxion; December 2007; pp. 203–210
Public Private Partnerships (PPP) in the German Public Real Estate Sector
Alfen, Hans Wilhelm/ Leupold, Andreas in: European PPP Law 1/2007
Overview of the PPP Reals Estate Market in Germany
Alfen, Hans Wilhelm/ Vollrath, Susann in: European PPP Law 2/2007