https://www.publications.parliament.uk/pa/ld201617/ldselect/ldeucom/169/169.pdf
https://blogs.sussex.ac.uk/uktpo/2018/02/15/sustainability-impact-assessment-for-post-brexit-britain/
https://publications.parliament.uk/pa/cm201719/cmselect/cmcumeds/365/365.pdf
https://ec.europa.eu/commission/sites/beta-political/files/financial-settlement-essential-principles-draft-position-paper_en.pdf