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[Berlin]: Edition Sigma, 2017 ; Baden-Baden: Nomos, 2017
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Frankfurt am Main [u.a.]: Campus, 2012
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London: Rowman & Littlefield International, Ltd., [2019] ; Brussels, Belgium: Center for European Policy Studies (CEPS), [2019]
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Baden-Baden: Nomos, 2017
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Köln: Max-Planck-Inst. für Gesellschaftsforschung, 2011
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Baden-Baden: Nomos, 2020