5 IZA Discussion Papers
IZA Discussion Paper No. 14752
IZA Discussion Paper No. 11450
published in: Labour Economics, 2019, 61, Article 101743
IZA Discussion Paper No. 2230
published in: Scandinavian Journal of Economics, 2010, 112 (3), 546-569
IZA Discussion Paper No. 736
IZA Discussion Paper No. 15
published in: Applied Economics Quarterly, 2004, 50 (4), 329–362