7 IZA Discussion Papers
IZA Discussion Paper No. 13141
IZA Discussion Paper No. 12286
IZA Discussion Paper No. 12136
Published in: Journal of Public Economics, Volume 188, August 2020, 104223. (Download here: https://www.sciencedirect.com/science/article/abs/pii/S0047272720300876)
IZA Discussion Paper No. 11667
revised version published in: American Economic Journal: Economic Policy, 2019, 11(2), 269-300
IZA Discussion Paper No. 11536
IZA Discussion Paper No. 11120
IZA Discussion Paper No. 2957
published in: Journal of Public Economics, 2009, 93 (3-4), 464-481