5 IZA Discussion Papers
IZA Discussion Paper No. 10488
IZA Discussion Paper No. 10177
published in: Labour Economics, 2016, 42, 177-193
IZA Discussion Paper No. 5937
published in: Journal of the Royal Statistical Society Series A, 2013, 176 (4), 951-980
IZA Discussion Paper No. 1076
IZA Discussion Paper No. 1075