5 IZA Discussion Papers
IZA Discussion Paper No. 14561
IZA Discussion Paper No. 8780
revised version published in: Journal of Labor Economics, 2018, 36 (2), 479 - 509
IZA Discussion Paper No. 4150
published in: Journal of the European Economic Association, 2011, 9 (5), 817-839
IZA Discussion Paper No. 3343
published in: Population, Space and Place, 2009, 15 (4), 323-342
IZA Discussion Paper No. 2750
published in: Journal of Economic Growth, 2010, 15 (2), 93-125