4 IZA Discussion Papers
IZA Discussion Paper No. 15525
IZA Discussion Paper No. 11966
published in: ILR Review, 2021, 72 (1), 27-55
IZA Discussion Paper No. 3071
published in: National Institute Economic Review, 2008, 203 (1), 91–108
IZA Discussion Paper No. 1196
published in Review of Economic Studies, 2006, 73 (4), 1057-1084