@book{Koehler2007, author = {Koehler, Jan and Zürcher, Christoph}, year = {2007}, language = {eng}, copyright = {http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen}, title = {Assessing the contribution of international actors in Afghanistan}, url = "http://dx.doi.org/10.17169/refubium-22877", }