15 IZA Discussion Papers
IZA Discussion Paper No. 14089
IZA Discussion Paper No. 12997
IZA Discussion Paper No. 12968
IZA Discussion Paper No. 12636
IZA Discussion Paper No. 12617
IZA Discussion Paper No. 12552
IZA Discussion Paper No. 11468
IZA Discussion Paper No. 11444
IZA Discussion Paper No. 10951
IZA Discussion Paper No. 10649
IZA Discussion Paper No. 9710
IZA Discussion Paper No. 9324
revised version published in: Industrial and Labor Relations Relations, first published online September 4, 2018
IZA Discussion Paper No. 8989
published in: Open Journal of Human Resource Management, 2018, 1 (1), 38 - 52