1. ACARE
. (2020). Time for change, the need to rethink Europe's FlightPath 2050. Advisory Council for Aviation Research and Innovation in Europe. Retrieved from https://www.acare4europe.org/wp-content/uploads/2022/02/Time_for_change_FlightPath_2050.pdf
2. Biodiversity management,2019
3. ATAG
. (2008). The economic and social benefits of air transport 2008. Retrieved from http://www.atag.org/files/ATAG%20brochure-124015A.pdf
4. ATAG
. (2020). Aviation: Benefits beyond borders. Retrieved from https://aviationbenefits.org/downloads/aviation-benefits-beyond-borders-2020/. Accessed on September 30, 2020.
5. CAPA – Centre for Aviation
. (2019). Climate change: Its impact on aviation. The time to plan is now. Retrieved from https://centreforaviation.com/analysis/reports/climate-change-its-impact-on-aviation-the-time-to-plan-is-now-454475