https://www.socialeurope.eu/the-rule-of-law-a-simple-phrase-with-exacting-demands
https://publications.parliament.uk/pa/cm201719/cmselect/cmcumeds/366/366.pdf
https://www.econstor.eu/bitstream/10419/271918/1/cesifo1_wp10274.pdf
https://openmarketsinstitute.org/wp-content/uploads/2020/04/OMI-House-Letter-4.17.20.pdf