1. CCAFS 2011 Climate Change, Agriculture and Food Security n6, CGIAR, ISBN-1904-9005
2. Environmental Finance 2011 as available in http://www.environmental-finance.com/news/view/1970 at 10/11/2012
3. FAO Statistic Yearbook 2012 World Food and Agriculture. Food and Agriculture Organization of the United Nations. Rome. ISBN 978-92-5-106913-4.
4. FCCC 2011 Framework Convention on Climate Change Report of the Conference of the Parties on its sixteenth United Nations FCCC/CP/2010/7/Add.1, Cancun, December 2010, .Distr.: 15 March 2011. Available at http://unfccc.int/resource/docs/2010/cop16/eng/07a01.pdf#page = 4 at 28/3/2012.
5. Foley A. Jonathan, Navin Ramankutty, Kate A. Brauman, Emily S. Cassidy, James SGerber, Matt Johnston, Nathaniel D. Mueller, Christine O’Connell, Deepak K. Ray, Paul C. West, Christian Balzer, Elena M. Bennett, Stephen R. Carpenter, Jason Hill, Chad Monfreda, Stephen Polasky, Johan Rockström, John Sheehan, Stefan Siebert, David Tilman, and David P. M. Zaks. 2011. Solutions for a Cultivated Planet. Nature 478, 337–342. doi:10.1038/nature10452