1. Directive 2008/101/EC of the European Parliament and of the Council of 19 November 2008 amending Directive 2003/87/EC so as to include aviation activities in the scheme for greenhouse gas emission allowance trading within the Community;European Parliament Council of the European Union;Off J Eur Union,2009
2. Aeronautics and air transport beyond Vision 2020 (Towards 2050). Brussels: Strategy Review Group, The Advisory Council for Aeronautics Research in Europe; 2010.
3. European aeronautics: A vision for 2020 — A synopsis;Busquin;Air Sp Eur,2001
4. Darecki M, Edelstenne C, Enders T, Fernandez E, Hartman P, Herteman JP, et al. Flightpath 2050 Europe’s vision for aviation: Report of the High Level Group on Aviation Research Policy; 2011.
5. ICAO. Historic agreement reached to mitigate international aviation emissions. Montreal: ICAO News Release; 2016. [cited 2018 Jan 2]. Available from: http://www.icao.int/Newsroom/Pages/Historic-agreement-reached-to-mitigate-international-aviation-emissions.aspx.