4 IZA Discussion Papers
IZA Discussion Paper No. 16773
IZA Discussion Paper No. 14280
published online in: Educational Evaluation and Policy Analysis, 13 February 2023
IZA Discussion Paper No. 6525
published in: American Economic Journal: Applied Economics, 2013, 5 (4), 1-27
IZA Discussion Paper No. 5690
published in: Journal of Policy Analysis and Management, 2012, 31 (4), 837 - 860