6 IZA Discussion Papers
IZA Discussion Paper No. 14068
IZA Discussion Paper No. 11293
published in: International Journal of Manpower, 2018, 39 (4), 631-636
IZA Discussion Paper No. 10716
IZA Discussion Paper No. 10099
IZA Discussion Paper No. 6568
shorter German version published in: Zeitschrift für Soziologie, 2013, 42 (4), 315-336
IZA Discussion Paper No. 6090