@book{Knoll2011, author = {Knoll, Martin}, year = {2011}, language = {eng}, copyright = {http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen}, title = {Foreign aid and revenue response}, url = "http://dx.doi.org/10.17169/FUDOCS_document_000000012618", }