4 IZA Discussion Papers
IZA Discussion Paper No. 15686
IZA Discussion Paper No. 11683
published in: Journal of Human Resources, 2024, 59 (2), 349-388
IZA Discussion Paper No. 11347
updated paper forthcoming in: Education Economics, 2025
IZA Discussion Paper No. 8411
revised version published in: Journal of the Royal Statistical Society, Series A, 2018, 181 (4), 1057 - 1074