4 IZA Discussion Papers
IZA Discussion Paper No. 16200
This version: March 2024
IZA Discussion Paper No. 15088
IZA Discussion Paper No. 4449
revised version published in: Empirica, 2010, 37(2), 215-236
IZA Discussion Paper No. 4360
published in: European Journal of Political Economy, 2011, 27(4), 625-641