https://www.europarl.europa.eu/doceo/document/TA-9-2021-0430_EN.pdf
https://www.socialeurope.eu/three-myths-catalonias-independence-movement
https://www.eca.europa.eu/Lists/ECADocuments/SR22_18/SR_Resilience-EU-inst_EN.pdf
https://www.publications.parliament.uk/pa/cm201617/cmselect/cmscotaf/82/82.pdf