1. International Air Transport Association, IATA's Annual Review 2019. https://www.iata.org/en/publications/annual-review/.
2. U.S. Depatment of Energy, Office of Energy Efficiency & Renewable Energy, Sustainable Aviation Fuel: Review of Technical Pathways. https://www.energy.gov/sites/prod/files/2020/09/f78/beto-sust-aviation-fuel-sep-2020.pdf.
3. EU Transport GHG: Routes to 2050, The contribution of transport to GHG emissions. https://www.eutransportghg2050.eu/cms/the-contribution-of-transport-to-ghg-emissions/.
4. International Air Transport Association, IATA's Annual Review 2013. https://www.iata.org/en/publications/annual-review/.
5. Biofuels for a sustainable future;Liu;Cell,2021