4 IZA Discussion Papers
IZA Discussion Paper No. 15047
published in: Journal of Economic Literature, 2021, 61 (1), 144–180
IZA Discussion Paper No. 9748
published in: Annual Review of Economics, 2016, 8, 205-240
IZA Discussion Paper No. 6132
revised version published in: Industrial Relations, 2015, 54 (2), 188-239
IZA Discussion Paper No. 9