- vom 4.12.2023
Collateral damage
educational attainment and labor market outcomes among German war and post-war cohortsWuppertal : Bergische Univ. Wuppertal, 2012
- vom 27.11.2023
Central exit examinations increase performance ... but take the fun out of mathematics
Rev. version, Wuppertal : Bergische Univ. Wuppertal, 2008