https://committees.parliament.uk/publications/8781/documents/88926/default/
http://blogs.lse.ac.uk/brexit/2017/08/22/what-does-respecting-the-referendum-result-mean/
http://www.ladocumentationfrancaise.fr/var/storage/rapports-publics/084000459.pdf
http://www.voxeurop.eu/en/2017/eu-uk-relations-5120821