65 IZA Discussion Papers
IZA Discussion Paper No. 2353
published in: Journal of Labor Economics, 2007, 25(2), 201-229
IZA Discussion Paper No. 1298
revised version published in: Journal of Institutional and Theoretical Economics, 2006, 162(3), 391-411
IZA Discussion Paper No. 1202
published in: Journal of Population Economics, 2010, 23 (3), 933-962
IZA Discussion Paper No. 690
IZA Discussion Paper No. 639
published in: Labour Economics, 2004, 11 (1), 129-144