
https://www.open-britain.co.uk/new_research_trade_deals_with_five_key_countries_could_take_26_years_to_negotiate

http://www.conservativehome.com/platform/2017/05/what-would-wto-mean-andrew-stoler-and-geoff-raby-brexit-britain-has-no-need-to-fear-wto-terms.html

https://voxeu.org/system/files/epublication/Economics%20of%20Brexit.pdf