5 IZA Discussion Papers
IZA Discussion Paper No. 4653
IZA Discussion Paper No. 4652
published in: Monthly Labor Review, 2012, 135 (5), 3-18.
IZA Discussion Paper No. 3716
published in revised form as 'The size of regions with land use for production ' in: Regional Science and Urban Economics, 2010, 40 (6), 481 - 489
IZA Discussion Paper No. 3660
published in: Industrial and Labor Relations Review, 2009, 62 (2), 47-156.
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