2 IZA Discussion Papers
IZA Discussion Paper No. 9194
pubished in: Quarterly Journal of Economics, 2017, 132 (3), 1165 -1217
IZA Discussion Paper No. 7403
revised version published as 'Private and Public Placement Services for Hard-To-Place Unemployed: Results from a Randomized Field Experiment' in: ILR Review, 2016, 69, 471-500