4 IZA Discussion Papers
IZA Discussion Paper No. 10259
published in: Social Choice and Welfare, 2016, 47 (4), 791-824.
IZA Discussion Paper No. 6505
revised version published in: Applied Economics, 2014, 46 (17), 2066-2086
IZA Discussion Paper No. 4167
IZA Discussion Paper No. 3088
published in: B.E. Journal of Economic Analysis and Policy: Contributions to Economic Analysis and Policy, 2011, 11 (1)