205 IZA Discussion Papers
IZA Discussion Paper No. 647
revised version published in: Journal of Economics and Management Strategy, 2005, 14 (1), 187-207
IZA Discussion Paper No. 610
published in: Journal of Population Economics, 2005, 18(1), 93-112
IZA Discussion Paper No. 513
published in: Research in Labor Economics, 2004, 23, 335-358
IZA Discussion Paper No. 430
published in: Journal of Socio-Economics, 2007, 36 (2), 233 - 249
IZA Discussion Paper No. 43