5 IZA Discussion Papers
IZA Discussion Paper No. 13090
IZA Discussion Paper No. 12485
IZA Discussion Paper No. 10331
published in: Journal of Population Economics 2021, 34 (1), 1-33
IZA Discussion Paper No. 7020
published in: A. F. Constant, K. F. Zimmermann (eds), International Handbook on the Economics of Migration, Edward Elgar 2013, Cheltenham, UK, and Northampton, USA, Chapter 14, 259-275
IZA Discussion Paper No. 4315
published in: International Review of Economics, 2010, 57, 119-141