50 IZA Discussion Papers
IZA Discussion Paper No. 5274
IZA Discussion Paper No. 5174
IZA Discussion Paper No. 5094
IZA Discussion Paper No. 4879
revised version available
IZA Discussion Paper No. 4480
published in: International Journal of Manpower, 2010, 31 (2), 188-207
IZA Discussion Paper No. 4066
IZA Discussion Paper No. 3758
IZA Discussion Paper No. 2566
published in: Journal of Population Economics, 2009, 22 (4), 827-858
IZA Discussion Paper No. 1479
IZA Discussion Paper No. 745
published in: German Economic Review, 2005, 6 (3), 331-353