3 IZA Discussion Papers
IZA Discussion Paper No. 11672
IZA Discussion Paper No. 5332
published in: American Journal of Political Science, 2013, 57 (3), 582-597
IZA Discussion Paper No. 4939
published as "Tenure in Office and Public Procurement" in: American Economic Journal: Economic Policy, 2017, 9 (3), 59-105