3 IZA Discussion Papers
IZA Discussion Paper No. 8884
published in: Journal of the European Economics Association, 2019, jvz018, https://doi.org/10.1093/jeea/jvz018
IZA Discussion Paper No. 5832
published as 'A Search and Matching Approach to Labor Markets: Did the Natural Rate of Unemployment Rise?' in: Journal of Economic Perspectives, 2012, 26 (3), 3-26
IZA Discussion Paper No. 1106
published in: R. Zwengel (ed.), Gesellschaftliche Perspektiven: Jahrbuch der Hessischen Gesellschaft für Demokratie und Ökologie, 2004, 5, 55-71