1. Peaking of world oil production: impacts, mitigation and risk management;Hirsch,2005
2. A deeper shade of green;McKibben;National Geographic,2006
3. The energy balance of corn ethanol: an update;Shapouri,2002
4. Biodiesel processing and production;Van Gerpen;Fuel Processing Technology,2005
5. Energy Independence and Security Act of 2007;Congress, 110th United States,2007