
http://ec.europa.eu/transport/sites/transport/files/eu_air_carriers_by_country_holding_an_active_operating_licence.pdf

https://verfassungsblog.de/cjeus-independence-and-lawful-composition-in-question-part-v/

https://www.socialeurope.eu/the-rule-of-law-a-simple-phrase-with-exacting-demands