6 IZA Discussion Papers
IZA Discussion Paper No. 15507
IZA Discussion Paper No. 12239
published in: Journal of Human Resources, 2021, 56 (4), 1113-1140
IZA Discussion Paper No. 11142
IZA Discussion Paper No. 8871
published in: Economics of Education Review, 2017, 57, 1-9
IZA Discussion Paper No. 8767
published in: Economics of Education Review, 2016, 53, 296-310.
IZA Discussion Paper No. 3588
published in: Higher Education, 2009, 57, 315-333