3 IZA Discussion Papers
IZA Discussion Paper No. 12080
published in: German Economic Review, 2019, 20, e831-e851
IZA Discussion Paper No. 6122
published in: Annals of Economics and Statistics, 2016, 121-122, 121-160
IZA Discussion Paper No. 5082
published in: International Journal of Manpower, 2010, 31 (7), 793-817