3 IZA Discussion Papers
IZA Discussion Paper No. 6916
published in: International Economic Review, 2015, 56 (3), 889-915
IZA Discussion Paper No. 4416
published in: Journal of the European Economic Association, 2016, 14 (6), 1155 - 1180
IZA Discussion Paper No. 3914
published in: Economic Inquiry, 2012, 50 (4), 867–879; 10.1111/j.1465-7295.2010.00295.x