1. Agroecology: The Science of Sustainable Agriculture Biodiversity and Pest Management in Agroecosystems;Altieri,1995
2. Soil biodiversity for agricultural sustainability;Brussaard;Agric. Ecosyst. Environ.,2007
3. Managing grazing animals to achieve nutrient cycling and soil improvement in no-till integrated systems;Carvalho de Faccio;Nutr. Cycle Agroecosyst.,2010
4. CIAT, 2009. http://gisweb.ciat.cgiar.org/gapanalysis/.
5. Sustainable agriculture: the trade-offs with productivity, stability and equitability;Conway,1993