9 IZA Discussion Papers
IZA Discussion Paper No. 14080
IZA Discussion Paper No. 13211
IZA Discussion Paper No. 12733
forthcoming in: Journal of Human Capital, 2021
IZA Discussion Paper No. 12463
IZA Discussion Paper No. 11305
forthcoming in: Small Business Economics, 2021
IZA Discussion Paper No. 7522
IZA Discussion Paper No. 4607
published in: Journal of Health Economics, 2010, 29 (2), 285-302
IZA Discussion Paper No. 22