5 IZA Discussion Papers
IZA Discussion Paper No. 12960
IZA Discussion Paper No. 12478
forthcoming in: Journal of Human Resources
IZA Discussion Paper No. 11163
IZA Discussion Paper No. 10845
IZA Discussion Paper No. 8141
revised version published as 'Do Internships Pay Off? The Effects of Student Internships on Earnings' in: Journal of Human Resources, 2022, 57 (4), 1242 - 1275 (joint with Shushanik Margaryan and Mathias Schumann)