http://www.ips-journal.eu/regions/europe/article/show/a-banking-union-without-unity-2181/
https://www.devcommittee.org/sites/dc/files/download/Documents/2023-03/Final_DC2023-0002%20evolution%20paper.pdf
http://visual.ons.gov.uk/trading-places-uk-goods-trade-with-eu-partners/