5 IZA Discussion Papers
IZA Discussion Paper No. 16797
IZA Discussion Paper No. 16736
IZA Discussion Paper No. 7980
published in: American Economic Journal: Applied Economics, 2017, 9(3): 36-69
IZA Discussion Paper No. 2249
published in: American Economic Journal: Microeconomics, 2010, 2 (2), 1-33
IZA Discussion Paper No. 849