3 IZA Discussion Papers
IZA Discussion Paper No. 10709
published in: Journal of Behavioral and Experimental Economics, 2017, 68, 91 - 96
IZA Discussion Paper No. 6744
published in: Health Economics, 2013, 22 (9), 1037 - 1051
IZA Discussion Paper No. 2893
published in: Teachers College Record, 2011, 113 (7), 1541-1565