4 IZA Discussion Papers
IZA Discussion Paper No. 6336
published in: Comparative Economic Studies, 2012, 54 (1), 103 - 120
IZA Discussion Paper No. 6004
published in: Economics of Innovation and New Technology, 2014, 23(1), 25-48.
IZA Discussion Paper No. 5162
published in: Industrial and Labor Relations Review, 2012, 65 (4), 779-809
IZA Discussion Paper No. 3824
published in: Bulletin of Economic Research, 2010, 62 (4). 387 - 406