4 IZA Discussion Papers
IZA Discussion Paper No. 13746
forthcoming in: Journal of Politics
IZA Discussion Paper No. 13547
IZA Discussion Paper No. 9027
published in: American Economic Journal: Microeconomics, 2018, 10, 181-209
IZA Discussion Paper No. 1991
published in: Larry Blume and Steven Durlauf (eds), The New Palgrave Dictionary of Economics, 2nd ed (London: Palgrave), 2007