3 IZA Discussion Papers
IZA Discussion Paper No. 6228
published in: Research in Labor Economics, 2012, 34, 1-53
IZA Discussion Paper No. 3721
revised version published as 'Effects of flat tax reforms in Western Europe' in: Journal of Policy Modelling, 2009, 31 (5), 620-636
IZA Discussion Paper No. 3142
revised version published as "Is a flat tax reform feasible in a grown-up democracy of Western Europe? A simulation study for Germany" in: International Tax and Public Finance, 2008, 15 (5), 620-636