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Dordrecht: Springer, c 2006
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[S.l.]: SSRN, [2011]
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[S.l.]: SSRN, [2013]
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[S.l.]: SSRN, [2013]
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[S.l.]: SSRN, [2021]
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[S.l.]: SSRN, [2017]
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Cambridge, Mass: National Bureau of Economic Research, May 2018
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[S.l.]: SSRN, [2018]
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Cambridge, Mass: National Bureau of Economic Research, February 2016
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[S.l.]: SSRN, [2016]
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[S.l.]: SSRN, 2009
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[S.l.]: SSRN, 2009
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[S.l.]: SSRN, [2010]
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[S.l.]: SSRN, [2006]
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[S.l.]: SSRN, 2004
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[S.l.]: SSRN, 2004
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[S.l.]: SSRN, 2004
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Bonn: Institute for the Study of Labor (IZA), 2001
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Bonn: Institute for the Study of Labor (IZA), 2001
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[S.l.]: SSRN, 2000