1. Livestock’s Long Shadow. Environmental Issues and Options;Steinfeld,2006
2. IPCC Guidelines for National Greenhouse Gas Inventories. Agriculture, Forestry and Other Land Use,2006
3. The State of Food and Agriculture—Livestock in the Balance,2009
4. Greenhouse Gas Emissions from the Dairy Sector. A Life Cycle Assessment,2010
5. Comparing environmental impacts for livestock products: A review of life cycle assessments