25 IZA Discussion Papers
IZA Discussion Paper No. 1778
published in: Applied Economics Quarterly, 2006, 52 (4), 309-336
IZA Discussion Paper No. 1556
published in: Journal of Labor Economics, 2007, 25 (3), 439-474
IZA Discussion Paper No. 1449
IZA Discussion Paper No. 785
published in: Journal of International Economics, 2007, 72 (1), 75-96
IZA Discussion Paper No. 150
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