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2. Airports Council International. 2020. Best Airport by Size and Region (https://aci.aero/customer-experience-asq/asq-awards-and-recognition/asq-awards/current-winner-2019/departures/best-airport-by-size-and-region/#between-25-and-40).
3. Almeida, Miguel, Lionel Mok, and Krista Tukiainen. 2020. Sustainable Debt Global State of the Market H1 2020: Climate Bonds Initiative, p. 4 (https://www.climatebonds.net/system/tdf/reports/cbi-sustainable-debt-global-sotm-h12020.pdf?file=1&type=node&id=54589&force=0).