
http://www.cer.org.uk/sites/default/files/insight_js_st_9.6.17.pdf

https://www.socialeurope.eu/2017/07/road-soft-brexit/

https://www.cips.org/en/news/news/businesses-preparing-to-sever-supply-chain-ties-between-the-uk-and-the-eu-to-avoid-brexit-tariffs/