15Castaldo, Adriana, Saskia Gent, Gunjan Sondhi, and Ann Whitehead. "Child Migration in National Surveys."Development Research Centre on Migration, Globalisation and Poverty Working Paper No. T-28 (2009).
20Davis, Benjamin, Paul Winters, Gero Carletto, Katia Covarrubias, Esteban Quinones, Alberto Zezza, Kostas Stamoulis, and Stefania DiGiuseppe. "Rural income generating activities: A cross country comparison."106th EAAE Seminar on “Pro-poor development in low income countries: Food, agriculture, trade, and environment”. Montpellier, France, October 25-27, 2007.