@book{Berger2008, author = {Berger, Helge and Nitsch, Volker}, year = {2008}, isbn = {3-938369-77-9}, language = {eng}, copyright = {http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen}, title = {Gotcha!}, url = "http://dx.doi.org/10.17169/FUDOCS_document_000000002791", }