2 IZA Discussion Papers
IZA Discussion Paper No. 3560
substantially revised version published as 'How Skilled Immigration May Improve Economic Equality' in: IZA Journal of Migration, 2014, 3:2.
IZA Discussion Paper No. 3450
substantially revised version published in: Oxford Handbook on Economic Inequality, Oxford University Press, Oxford et al., 2009, 455 - 490