3 IZA Discussion Papers
IZA Discussion Paper No. 13344
revised version published as 'On the value of second opinions: a credence goods field experiment' in: Economics Letters, 2021, 205, 109925
IZA Discussion Paper No. 9085
published in: Journal of Public Economics, 2015, 129, 14-25
IZA Discussion Paper No. 5700
revised and extended version published in: Review of Economic Studies, 2013, 80 (3), 876-891