5 IZA Discussion Papers
IZA Discussion Paper No. 8130
published in: World Bank Economic Review, 2017, 31 (3), 786–808
IZA Discussion Paper No. 7057
IZA Discussion Paper No. 5551
IZA Discussion Paper No. 3268
revised version published in: Economic Development and Cultural Change, 2010, 58 (2), 323-344.
IZA Discussion Paper No. 2887
published in: Journal of Economic Surveys, 2008, 22 (4), 752-773