2 IZA Discussion Papers
IZA Discussion Paper No. 3497
substantially revised and rewritten version published as 'Tax enforcement, tax compliance and tax morale in transition economies: A theoretical model' in: European Journal of Political Economy, 2019, 56, 193 - 211
IZA Discussion Paper No. 2984
slightly revised version published in: Economics Letters, 2008, 99 (3), 552-556