http://www.ecfr.eu/article/commentary_there_is_life_for_the_eu_after_brexit
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/761852/05_December-_EU_Exit_Attorney_General_s_legal_advice_to_Cabinet_on_the_Withdrawal_Agreement_and_the_Protocol_on_Ireland-Northern_Ireland.pdf
http://www.economics-ejournal.org/economics/journalarticles/2017-4
https://www.socialeurope.eu/2017/07/fallacies-brexit-personifying-countries-simplistic-polemics/