424 IZA Discussion Papers
IZA Discussion Paper No. 423
published in: European Economic Review, 2003, 47(4), 645-668
IZA Discussion Paper No. 363
published in: Journal of Human Resources, 2003, 38 (1), 192-218
IZA Discussion Paper No. 337
published in: International Journal of Manpower, 2004, 25 (2), 150-166
IZA Discussion Paper No. 84
published in: Ifo Studien, 2000, 46 (1), 73-98