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Luxembourg: Office for Official Publ. of the European Communities, 2002
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Munich: CESifo, 2002
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Luxembourg: Publications Office, [2017]
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Luxembourg: Publications Office, 2006
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Luxembourg: Publications Office, 2002
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[S.l.]: SSRN, [2021]
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Luxembourg: Publications Office of the European Union, 2017
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[S.l.]: SSRN, 2009
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Uppsala: Uppsala University, Department of Economics, 2007
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Colchester: University of Essex, Institute for Social and Economic Research (ISER), 2004
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[S.l.]: SSRN, 2003
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[S.l.]: SSRN, 2002
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Berlin: Wissenschaftszentrum Berlin für Sozialforschung (WZB), 2002
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Munich: Center for Economic Studies and ifo Institute (CESifo), 2002
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Uppsala: Uppsala University, Department of Economics, 2001
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Berlin: Wissenschaftszentrum Berlin für Sozialforschung (WZB), 2000
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Cheltenham; Northhampton, Mass: E. Elgar, 2003
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Luxembourg: Publications Office, 2019
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Luxembourg: Publications Office, 2011
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Luxembourg: Publications Office, 2009