7 IZA Discussion Papers
IZA Discussion Paper No. 13531
forthcoming in: Journal of Applied Econometrics, 2020
IZA Discussion Paper No. 13047
IZA Discussion Paper No. 12958
IZA Discussion Paper No. 11381
IZA Discussion Paper No. 10812
revised version forthcoming in: Journal of Human Resources
IZA Discussion Paper No. 9073
IZA Discussion Paper No. 7310
published in: De Economist, 2015, 163 (2), 203-232