Collateral damage
educational attainment and labor market outcomes among German war and post-war cohortsWuppertal : Bergische Univ. Wuppertal, 2012
Compliance costs caused by agency action?
Empirical evidence and implications for tax complianceWuppertal : Bergische Univ. Wuppertal, 2012Consistently wrong: Neoclassical micro-foundations and the macroeconomic policy ineffectiveness hypothesis
Wuppertal : Bergische Univ. Wuppertal, 2013Creating reproducible publication quality graphics with R
a tutorialWuppertal : Bergische Univ. Wuppertal, 2015