8 IZA Discussion Papers
IZA Discussion Paper No. 14493
IZA Discussion Paper No. 11155
IZA Discussion Paper No. 11104
IZA Discussion Paper No. 9949
IZA Discussion Paper No. 9155
IZA Discussion Paper No. 8219
published in: Small Business Economics, 2015, 44 (1), 37-54
IZA Discussion Paper No. 7994
IZA Discussion Paper No. 7346