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1993
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Regensburg: Roderer, 1994
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Rio de Janeiro: Dep. de Economía, PUC-RIO, 2010
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Chicago, Illinois: Federal Reserve Bank of Chicago, September 2016
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Cambridge, Mass: National Bureau of Economic Research, 2021
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Cambridge, Mass: National Bureau of Economic Research, 2021
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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), 2000