4 IZA Discussion Papers
IZA Discussion Paper No. 6727
published in: IZA Journal of Labor & Development, 2014, 3:1
IZA Discussion Paper No. 3973
revised version published in: Journal of International Development, 2012, 24 (4), 415–432
IZA Discussion Paper No. 3963
revised version published in: World Development, 2012, 40 (6), 1135-1150
IZA Discussion Paper No. 3659