990 IZA Discussion Papers
IZA Discussion Paper No. 408
published in: Review of Economics and Statistics, 2003, 85 (1), 38-50
IZA Discussion Paper No. 388
published in: Canadian Journal of Economics, 2007, 40 (2), 445-467
IZA Discussion Paper No. 383
published in: Journal of Population Economics, 2007, 20 (4), 719 - 741
IZA Discussion Paper No. 338
published in: Macroeconomic Dynamics, 2009, 12 (2), 220-249.
IZA Discussion Paper No. 301
published in: E. Currle and T. Wunderlich (eds.), Deutschland – ein Einwanderungsland? Rückblick, Bilanz und neue Fragen - Festschrift für Friedrich Heckmann, Stuttgart 2001
IZA Discussion Paper No. 263
published in: Economica, 2002, 69 (276), 609-629
IZA Discussion Paper No. 198
published in: European Early Childhood Education Research Journal, 2003, 11 (2), 159-175
IZA Discussion Paper No. 198
published in: European Early Childhood Education Research Journal, 2003, 11 (2), 159-175
IZA Discussion Paper No. 157
published in: Labour Economics, 2001, 8 (6), 621-648
IZA Discussion Paper No. 115
published in: Pacific Economic Review, 2002, 7 (1), 65-84