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Berlin: Wissenschaftszentrum Berlin für Sozialforschung (WZB), 2003
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Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag, 2012
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JEDEM Journal of e-Democracy and Open Government, 2010
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Springer Science and Business Media LLC, 2008
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Nomos Verlag, 2006
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Berlin, 2001
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Springer Science and Business Media LLC, 2015
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Nomos Verlag, 2014
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Springer Science and Business Media LLC, 2008
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JEDEM Journal of e-Democracy and Open Government, 2012
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American Chemical Society (ACS), 1937
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Springer Science and Business Media LLC, 2008
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Springer Berlin Heidelberg, 2003
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Berlin, 2003
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Springer International Publishing, 2014
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Springer Science and Business Media LLC, 1998
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American Chemical Society (ACS), 1937
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American Chemical Society (ACS), 1937
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American Chemical Society (ACS), 1937
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American Chemical Society (ACS), 1938