65 IZA Discussion Papers
IZA Discussion Paper No. 1505
published in: Industrial Relations, 2008, 47 (3), 355-389
IZA Discussion Paper No. 904
published in: Oxford Economic Papers, 2006, 58 (3), 531-548
IZA Discussion Paper No. 655
published in: Economics of Education Review, 2005, 24 (3), 251-262
IZA Discussion Paper No. 632
published in: Journal of Applied Econometrics, 2005, 20 (1), 1-23
IZA Discussion Paper No. 159
published in: Economics of Governance, 2005, 6(3), 245-252
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