163 IZA Discussion Papers
IZA Discussion Paper No. 1880
published in: Journal of Urban Economics, 2012, 72 (2-3), 137-146
IZA Discussion Paper No. 931
published in: Journal of Population Economics, 2007, 20 (1), 9-33
IZA Discussion Paper No. 732
published in: Journal of Labor Economics, 2006, 24 (1), 39-57