IEA (2021), Impacts of behavioural changes on aviation energy consumption in the Net Zero Scenario, 2020-2050, IEA, Paris https://www.iea.org/data-and-statistics/charts/impacts-of-behavioural-changes-on-aviation-energy-consumption-in-the-net-zero-scenario-2020-2050-2, Licence: CC BY 4.0