5 IZA Discussion Papers
IZA Discussion Paper No. 12762
IZA Discussion Paper No. 10533
published in: Research Policy, 2019, 48 (1), 62-83
IZA Discussion Paper No. 10081
IZA Discussion Paper No. 8556
published in: Research Policy, 2015, 44 (9), 1659-1671
IZA Discussion Paper No. 6600