9 IZA Discussion Papers
IZA Discussion Paper No. 13252
IZA Discussion Paper No. 13185
IZA Discussion Paper No. 12203
IZA Discussion Paper No. 11243
IZA Discussion Paper No. 10728
IZA Discussion Paper No. 9559
published in: Economics of Education Review, 2018, 63, 134-153
IZA Discussion Paper No. 6468
published in: Journal of Applied Econometrics, 2014, 29 (1), 1-21
IZA Discussion Paper No. 5661
published in: Manchester School, 2011, 79 (s2), 5 - 16
IZA Discussion Paper No. 4537
published in: Quarterly Review of Economics and Finance, 2013, 53 (3), 221-237