
https://www.congress.gov/117/bills/hr5525/BILLS-117hr5525ih.pdf

https://www.openmarketsinstitute.org/publications/sling-de-economizing-antitrust-law-starts-with-market-definition

http://www.irishtimes.com/opinion/a-shared-space-solution-to-ireland-s-brexit-border-problem-1.3022440