5 IZA Discussion Papers
IZA Discussion Paper No. 16446
IZA Discussion Paper No. 14935
IZA Discussion Paper No. 11840
IZA Discussion Paper No. 6398
published in: IZA Journal of Labor Policy, 2013, 2:14
IZA Discussion Paper No. 3577
substantially revised version published in: Journal of Economic Psychology, 2011, 32 (3), 480-488