5 IZA Discussion Papers
IZA Discussion Paper No. 13110
IZA Discussion Paper No. 12573
IZA Discussion Paper No. 1384
published in: Revue d'économie du développement, 2007, 21 (5), 69-84
IZA Discussion Paper No. 664
published as 'Skill Upgrading and Rigid Relative Wages' in: B.E. Journal of Macroeconomics: Contributions to Macroeconomics, 2005, 5(1), Art. 7
IZA Discussion Paper No. 491
published in: Defence and Peace Economics, 2003, 14 (3), 175-192