https://www.emcdda.europa.eu/system/files/publications/13238/TD0420439FRN.pdf
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:52023PC0160
https://www.boe.es/buscar/pdf/2023/BOE-A-2023-4513-consolidado.pdf
http://www.lawsociety.org.uk/news/stories/leaving-in-an-orderly-fashion-our-approach-to-brexit/