4 IZA Discussion Papers
IZA Discussion Paper No. 12325
published in: World Development, 2022, 152, 105787
IZA Discussion Paper No. 10615
published in: American Economic Journal: Applied Economics, 2021 13 (2), 297-332
IZA Discussion Paper No. 6896
published in: Journal of Development Economics, 2014, 106: 199-210
IZA Discussion Paper No. 6895
revised version published in: World Bank Research Observer, 2014, 29(1), 48-82