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Hoboken, NJ: Wiley, 2022
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[S.l.]: SSRN, [2005]
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2023
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Hoboken, NJ: Wiley, 2023
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[Paderborn]: Universität Paderborn, Center for International Economics, November 2019
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[S.l.]: SSRN, [2019]
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2022
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[Köln]: Verein für Socialpolitik, February 29, 2020
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Munich: Center for Economic Studies and Ifo Institute (CESifo), 2020
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Kiel, Hamburg: ZBW - Leibniz Information Centre for Economics, 2020
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Trier: University of Trier, Institute for Labour Law and Industrial Relations in the European Union (IAAEU), 2020
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[S.l.]: SSRN, [2021]
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New Haven, CT: The Econometric Society, 2011
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[S.l.]: SSRN, [2006]
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Bonn: Institute for the Study of Labor (IZA), 2005
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Bonn: Institute of Labor Economics (IZA), 2019
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Zurich: University of Zurich, Department of Economics, 2018
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Kiel: Kiel Institute for the World Economy (IfW), 2017
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Bonn: Institute for the Study of Labor (IZA), 2005
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Bonn: Institute for the Study of Labor (IZA), 2000