
https://www.jean-jaures.org/publication/accord-de-bougival-les-difficultes-de-trouver-le-chemin-vers-le-nous-en-nouvelle-caledonie/?post_id=70117&export_pdf=1

https://www.sachverstaendigenrat-wirtschaft.de/fileadmin/dateiablage/gutachten/jg201819/Chapter_1.pdf

https://www.gov.pl/web/primeminister/letter-from-prime-minister-mateusz-morawiecki-to-the-heads-of-governments-and-the-presidents-of-the-european-council-the-european-commission-and-the-european-parliament-on-relations-between-national-law-and-european-law