1. Cline WR (2007) Global warming and agriculture; impact estimates by country. Peterson Institute for International Economics. United States of America, Washington, DC
2. Cline WR (2008) Global warming and agriculture, Peterson Institute for International Economics and the Center for Global Development. United States of America, Washington, DC
3. Downing TE (1996) Climate change and world food security. Springer, Heidelberg
4. Fisher G, Shah M, Van Velthuizen H (2002) Climate change and agricultural vulnerability. International Institute for Applied Systems Analysis, Vienna
5. Hisas L (2011) The food gap; the impacts of the climate change on food production: 2020 perspective. Universal Ecological Fund (Fundación Ecológica Universal FEU-US), VA, USA.
http://www.feu-us.org/images/The_Food_Gap.pdf