64 IZA Discussion Papers
IZA Discussion Paper No. 1936
published in: Public Choice, 2010, 144 (1), 215–238
IZA Discussion Paper No. 923
published in: Scandinavian Journal of Economics, 2006, 108 (2); 317-337.
IZA Discussion Paper No. 744
published in: European Journal of Political Economy, 2006, 22 (4), 944-968
IZA Discussion Paper No. 617