5 IZA Discussion Papers
IZA Discussion Paper No. 16195
IZA Discussion Paper No. 12018
IZA Discussion Paper No. 10602
IZA Discussion Paper No. 9541
published in: Journal of Development Studies, 2016, 52 (12), 1810-1825.
IZA Discussion Paper No. 3657
The Annals of the American Academy of Political and Social Science, 2010, 630 (1), 224-244.