1. D’Amoura, C. R., Reitsmac, F., Baiocchid, G., Barthele, S., Güneralpg, B., Erbh, K.-H., Haberlh, H., Creutziga, F., & Seto, K. C. (2017). Future urban land expansion and implications for global croplands. PNAS, 114(34), 8939–8944.
2. den Biggelaar, C., Lal, R., Wiebe, K., & Breneman, V. (2003). The global impact of soil erosion on productivity: I: Absolute and relative erosion-induced yield losses. Advances in Agronomy, 81, 1–48.
3. Food and Agriculture Organization. (1996). Rome declaration on world food security and world food summit plan of action. Rome: FAO. Available from: http://www.fao.org/docrep/003/w3613e/w3613e00.HTM.
4. Food and Agriculture Organization. (2017). The future of food and agriculture. Rome: FAO.
5. Food and Agriculture Organization, International Fund for Agricultural Development, World Food Program. (2013). The state of food insecurity in the world 2013. The multiple dimensions of food security. Rome: FAO.