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2. Midwest Aviation Sustainable Biofuels Initiative Fueling a Sustainable Future for Aviation 2013 http://www.masbi.org/content/assets/MASBI_Report.pdf
3. Environmental Protection Agency Overview for Renewable Fuel Standard https://www.epa.gov/renewable-fuel-standard-program/program-overview-renewable-fuel-standard-program 2018
4. California Air Resources Board Low Carbon Fuel Standard 2017 https://www.arb.ca.gov/fuels/lcfs/lcfs.htm
5. Techno-economic comparison of biomass-to-transportation fuels via pyrolysis, gasification, and biochemical pathways;Anex;Fuel,2010