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[S.l.]: SSRN, [2012]
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[S.l.]: SSRN, [2020]
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[S.l.]: SSRN, [2019]
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Cambridge, Mass: National Bureau of Economic Research, August 2015
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[S.l.]: SSRN, [2015]
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[S.l.]: SSRN, [2013]
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Cambridge, Mass: National Bureau of Economic Research, January 2012
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[S.l.]: SSRN, [2009]
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[S.l.]: SSRN, [2010]
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[S.l.]: SSRN, [2010]
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[S.l.]: SSRN, [2009]
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[S.l.]: SSRN, [2009]
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Bonn: Institute for the Study of Labor (IZA), 2009
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[S.l.]: SSRN, [2010]
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[S.l.]: SSRN, [2009]
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Cambridge, Mass: National Bureau of Economic Research, October 2008
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Essen: Global Labor Organization (GLO), 2020
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Bonn, Germany: IZA - Institute of Labor Economics, April 2020
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Essen: Global Labor Organization (GLO), 2020
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Bonn: Institute of Labor Economics (IZA), 2020