485 IZA Discussion Papers
IZA Discussion Paper No. 796
IZA Discussion Paper No. 585
revised version published in: American Economic Review, 2005, 95 (5), 1653-1672
IZA Discussion Paper No. 440
revised version published in: International Economic Review, 2005, 46 (4), 1103-1142
IZA Discussion Paper No. 273
published in: Economic Journal, 2006, 116 (511), 382-407
IZA Discussion Paper No. 46
published in: Journal of Population Economics, 2000, 13(3), 485-508