https://www.ifs.org.uk/publications/10302
http://www.ecfr.eu/article/commentary_there_is_life_for_the_eu_after_brexit
https://institute.global/news/tony-blair-parliaments-duty-brexit
https://www.wto.org/english/tratop_e/envir_e/trade-climate-change_info_brief_no7_e.pdf