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[S.l.]: SSRN, [2014]
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Cambridge, Mass: National Bureau of Economic Research, December 2013
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[S.l.]: SSRN, [2013]
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Bonn: Institute for the Study of Labor (IZA), 2013
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Berlin: Duncker & Humblot, 2013
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Berlin: Duncker & Humblot, 2012
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Elsevier BV, 2013
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Duncker & Humblot GmbH, 2013
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Duncker & Humblot GmbH, 2012