3 IZA Discussion Papers
IZA Discussion Paper No. 12826
published in: Economics of Education Review, 2020, 78, 102038.
IZA Discussion Paper No. 12588
published in: Oxford Review of Education, 2020, 46 (6), 734-751
IZA Discussion Paper No. 4991
published in: Journal of the Royal Statistical Society, Series A (Statistics in Society), 2013, 176 (2), 431–457