3 IZA Discussion Papers
IZA Discussion Paper No. 15842
published in: Energy Economics, 2023, 119, 106529
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)
IZA Discussion Paper No. 7103
published in: Labour Economics, 2013, 21, 74-85