4 IZA Discussion Papers
IZA Discussion Paper No. 16122
IZA Discussion Paper No. 13031
revised version published in: International Journal of Manpower, 2020, 41 (6), 753 - 777
IZA Discussion Paper No. 7013
IZA Discussion Paper No. 5336
published in: Chong Alberto(ed.), Measuring the Impact of Information Technologies in Latin America, World Bank, 2016