127 IZA Discussion Papers
IZA Discussion Paper No. 1773
published in: Economic Record, 2008, 84(267), 466-485
IZA Discussion Paper No. 1502
updated version published as ' "Hard Workers" and Labor Restrictions' in: Journal of Population Economics, 2012, 25 (2), 469 - 494
IZA Discussion Paper No. 1471
published in: Journal of Human Resources, 2009, 44(4), 976-997
IZA Discussion Paper No. 1379
IZA Discussion Paper No. 440
revised version published in: International Economic Review, 2005, 46 (4), 1103-1142
IZA Discussion Paper No. 428
published in: Journal of Population Economics, 2003, 16 (3), 399–422
IZA Discussion Paper No. 293
published in: Labour Economics, 2004, 11 (3), 373-393