1. European Commission. Energy, Climate change, Environment, Climate Action, EU Action, Transport emissions. https://ec.europa.eu/clima/policies/transport/aviation_en#tab-0-0.
2. Federal Aviation Administration. Office of Environment and Energy, Aviation and Emissions a Primer; 2005.
3. Aviation and global climate change in the 21st century;Lee;Atmos Environ,2009
4. An ecological optimization criterion for finite-time heat engines;Angulo-Brown;J Appl Phys,1991
5. Defining the ecological coefficient of performance for an aircraft propulsion system;Şöhret;Int J Turbo Jet Engines,2017