3 IZA Discussion Papers
IZA Discussion Paper No. 11595
published in: Journal of Economic Behavior and Organization, 167, 104-121, 2019.
IZA Discussion Paper No. 9336
published in: Economics Letters, 2016, 140, 23-26.
IZA Discussion Paper No. 421
fully revised version with Clara Ponsati published in: Mathematical Social Sciences, 2005, 50 (2), 166-180