1. CO2 Emissions from Fuel Combustion: Detailed Estimates (International Energy Agency (IEA), 2014).
2. International Energy Statistics (Energy Information Administration (EIA), 2015);
http://www.eia.gov/cfapps/ipdbproject/IEDIndex3.cfm
.
3. Lee, D. S. et al. Aviation and global climate change in the 21st century. Atmos. Environ. 43, 3520–3537 (2009).
4. Henderson, J. Controlling Carbon Dioxide Emissions from the Aviation Sector (Stratus Consulting, 2005).
5. Pathways to a Low-Carbon Economy: Version 2 of the Global Greenhouse Gas Abatement Cost Curve (McKinsey & Company, 2009).