4 IZA Discussion Papers
IZA Discussion Paper No. 13954
substantially revised version published online in: Education Economics, 18 Nov 2022
IZA Discussion Paper No. 10613
published in: Quantitative Economics, 2017, 8 (3), 895-927
IZA Discussion Paper No. 4184
published in: European Economic Review, 2011, 55 (6), 741-758
IZA Discussion Paper No. 2370
published in: European Economic Review, 2007, 51 (5), 1059-1105