6 IZA Discussion Papers
IZA Discussion Paper No. 14103
IZA Discussion Paper No. 13097
IZA Discussion Paper No. 9348
published in: IZA Journal of Labor Policy, 2017, 6:5
IZA Discussion Paper No. 7742
IZA Discussion Paper No. 2868
published in: Fiscal Studies, 2008, 29 (2), 197-231
IZA Discussion Paper No. 1206
published in: Oxford Bulletin of Economics and Statistics, 2007, 69(3), 321-338