3 IZA Discussion Papers
IZA Discussion Paper No. 7170
revised version published as 'The European Crisis and Migration to Germany' in: Regional Science and Urban Economics, 2016, 60, 61–72
IZA Discussion Paper No. 7094
revised version published as 'The Size of the Cliff at the Border' in: Regional Science and Urban Economics, 2015, 51, 1-6
IZA Discussion Paper No. 5958
published in: Journal of Development Economics, 2013, 102, 79-100