1. AC (2015) Airports commission: final report. Airports Commission, London
2. ACI (2018) Annual world airport traffic report (WATR). Airports Council International, ACI World, Montréal
3. ACI (2021) The impact of COVID-19 on the airport business and the path to recovery. Advisory Bulletins, Airport Council International, 14 July 2021. https://aci.aero/news/2021/07/14/the-impact-of-covid-19-on-the-airport-business-and-the-path-to-recovery-2/
4. Akerman J (2005) Sustainable air transport-on track in 2050. Transp Res D 10:111–126
5. ATAG (2018) Aviation benefits beyond borders. Air Transport Action Group, Geneva Airport, Switzerland