4 IZA Discussion Papers
IZA Discussion Paper No. 9860
published in: Experimental Economics, 2017, 20, 130-155
IZA Discussion Paper No. 8286
substantially revised version available as IZA DP No. 9860
IZA Discussion Paper No. 8107
revised version published in: Economic Journal, 2018, 128, 1786-1819.
IZA Discussion Paper No. 7312
published in: European Economic Review, 2014, 65, 126-135