1. U.S. Energy Information Administration. State Energy data system (SEDS), Official Energy Statistics 2011 [Internet]. [cited: 2013 April]. Available from: http://www.eia.gov/state/seds/?sid=US.
2. Regulation of fuels and fuel additives: changes to renewable fuel standard program; final rule;U.S. Environmental Protection Agency,2010
3. FAA. Destination 2025, Executive summary [Internet]. Federal Aviation Administration, U.S. Department of Transportation; [cited: 2013 April]. Available from: http://www.faa.gov/about/plans_reports/media/Destination2025.pdf.
4. Air force energy plan 2010;U.S. Air Force,2010
5. Near-term feasibility of alternative jet fuels;Hileman,2009