2 IZA Discussion Papers
IZA Discussion Paper No. 8534
revised version published in: Journal of Economic Interaction and Coordination, 2017, 12(3), 595-611- DOI: http://dx.doi.org/10.1007/s11403-016-0177-9
IZA Discussion Paper No. 7030
published in: American Economic Review, 2013, 103 (4), 1325-59