4 IZA Discussion Papers
IZA Discussion Paper No. 16751
IZA Discussion Paper No. 8873
published as 'University education and non-cognitive skill development' in: Oxford Economic Papers, 2018, 70(2), 538–562
IZA Discussion Paper No. 8308
published in: Economic Journal , 2016, 126 (592). 654–681
IZA Discussion Paper No. 5943
published in: Economics Letters, 2012, 115 (1), 11-15