
https://s3.eu-central-1.amazonaws.com/euobs-media/59f9f4116a089cec71bf81b76413503a.pdf

https://blogs.lse.ac.uk/brexit/2021/02/04/indyref2-scottish-independence-would-be-2-3-times-more-costly-than-that-of-brexit-and-rejoining-the-eu-wouldnt-make-up-the-difference/

https://www.swp-berlin.org/publications/products/arbeitspapiere/WP_03-2021_EPIN-Report_CoFoE_01.pdf