
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/682894/Draft_Text_for_Discussion_-_Implementation_Period__1_.pdf

https://www.bloomberg.com/news/articles/2019-09-11/world-s-oldest-customs-union-and-u-k-reach-a-post-brexit-deal

https://knowledge.wharton.upenn.edu/article/us-companies-react-tariffs/?utm_source=kw_newsletter&utm_medium=email&utm_campaign=2019-06-25