3 IZA Discussion Papers
IZA Discussion Paper No. 14147
IZA Discussion Paper No. 10482
published in: Journal of Development Studies, 2018, 54 (4), 594 - 618
IZA Discussion Paper No. 8046
Non-technical version published (in French) in: Mondes en Développement, 2014, 42 (2), 166, 59-72