3 IZA Discussion Papers
IZA Discussion Paper No. 16585
accepted in: Journal of Political Economy, 2024
IZA Discussion Paper No. 1951
published in: Research in Higher Education, 2007, 48 (4), 453-486.
IZA Discussion Paper No. 1634
published in: Economics of Education Review, 2008, 27 (3), 319-331