https://blogs.sussex.ac.uk/uktpo/2018/12/17/organising-the-second-referendum/
https://publications.parliament.uk/pa/cm201719/cmselect/cmworpen/848/848.pdf
https://ukandeu.ac.uk/boris-johnsons-brexit-deal-whats-in-it-and-how-is-it-different-to-theresa-mays-version/
https://ec.europa.eu/commission/sites/beta-political/files/joint_table_citizens_rights_-_third_round.pdf