1. FAPRI US Baseline Briefing Book – Projections for Agricultural and Biofuel Markets MU Report #01‐13. [Online]. Food and Agricultural Policy Research Institute. Available at:http://www.fapri.missouri.edu/outreach/publications/2013/FAPRI_MU_Report_01_13.pdf[February 25 2015].
2. US EIA Annual Energy Outlook 2013. [Online]. US Energy Information Administration Washington DC. Available at:http://www.eia.gov/forecasts/aeo/pdf/0383%282013%29.pdf[February 25 2015].
3. US Congress Energy Independence and Security Act of 2007. 110th Congress 1st Session HR6.4(2007).
4. Well-to-wheels energy use and greenhouse gas emissions of ethanol from corn, sugarcane and cellulosic biomass for US use