7 IZA Discussion Papers
IZA Discussion Paper No. 15402
IZA Discussion Paper No. 15067
IZA Discussion Paper No. 13490
IZA Discussion Paper No. 13490
IZA Discussion Paper No. 8734
published in: The Journal of Human Resources, 2015, 50(1): 108-158
IZA Discussion Paper No. 8032
published in: Economics of Education Review, 2015, 45, 28-43
IZA Discussion Paper No. 3216
published in: Review of Economics and Statistics, 2010, 92 (2), 244-262