3 IZA Discussion Papers
IZA Discussion Paper No. 15211
IZA Discussion Paper No. 1734
published in: European Journal of Comparative Economics, 2006, 3(2), 133-170
IZA Discussion Paper No. 1578
published in: Arno Tausch and Almas Heshmati (eds.), Roadmap to Bangalore? Globalization, the EU's Lisbon Process, the Structures of Global Inequality, Nova Science Publishers, USA, 2007