5 IZA Discussion Papers
IZA Discussion Paper No. 17014
IZA Discussion Paper No. 10157
IZA Discussion Paper No. 8782
published in: P. Nijkamp, J. Poot and J. Bakens (eds.), The Economics of Cultural Diversity, Edward Elgar, 2015
IZA Discussion Paper No. 5678
published in: Research Synthesis Methods, 2011, 2 (1), 61- 76
IZA Discussion Paper No. 3178