7 IZA Discussion Papers
IZA Discussion Paper No. 16517
IZA Discussion Paper No. 15017
IZA Discussion Paper No. 14361
IZA Discussion Paper No. 13666
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. 2099
published in: Annals of Regional Science, 2008, 42, 967-986