7 IZA Discussion Papers
IZA Discussion Paper No. 16524
IZA Discussion Paper No. 16333
IZA Discussion Paper No. 15901
IZA Discussion Paper No. 15665
IZA Discussion Paper No. 7625
completely revised and extended version published as 'Designing Feedback in Voluntary Contribution Games: The Role of Transparency" in: Experimental Economics 2019, 22(2), 552–576
IZA Discussion Paper No. 3264
published in: Scandinavian Journal of Economics, 2012, 114 (4), 1267-1295
IZA Discussion Paper No. 1020
published in: Scandinavian Journal of Economics, 2004, 106 (4), 677-701