4 IZA Discussion Papers
IZA Discussion Paper No. 15784
IZA Discussion Paper No. 15593
IZA Discussion Paper No. 10339
revised version published in: Review of Economics and Statistics, 2022, 104 (6), 1138 -1156
IZA Discussion Paper No. 8969
published in: Journal of the European Economic Association, 2017, 15 (1), 1101 - 1157