4 IZA Discussion Papers
IZA Discussion Paper No. 14423
revised version published in: European Economics review, 2022, 146, 104164
IZA Discussion Paper No. 12886
published in: Journal of Human Capital, 2020, 14 (3), 343 - 370
IZA Discussion Paper No. 5532
published in: Education Economics, 2014, 22 (6), 569-588
IZA Discussion Paper No. 3588
published in: Higher Education, 2009, 57, 315-333