3 IZA Discussion Papers
IZA Discussion Paper No. 10153
published in: CESifo Economic Studies, 2020, 66 (1), 60 - 90
IZA Discussion Paper No. 4941
published in: O. Ashenfelter and D. Card (eds.), Handbook of Labor Economics, Amsterdam: Elsevier, 2011
IZA Discussion Paper No. 1222
revised version published in: Games and Economic Behavior, 2008, 63 (1), 56-76.