3 IZA Discussion Papers
IZA Discussion Paper No. 6407
published in: German Economic Review, 2014, 15 (2), 287-328
IZA Discussion Paper No. 5789
published as 'The impact of Bologna process on the graduate': in: Giornale degli economisti, 2010, 69 (3), 29-66
IZA Discussion Paper No. 3444
published in: Labour Economics, 2009, 16 (6), 638-647