4 IZA Discussion Papers
IZA Discussion Paper No. 15039
IZA Discussion Paper No. 14136
published in: Economics of Education Review, 2021, 83, 102120
IZA Discussion Paper No. 13968
published online in: Journal of Human Resources, 10 February 2021
IZA Discussion Paper No. 12455
published in: Journal of Labor Economics, 2020, 38 (3), 805 - 841