https://www.instituteforgovernment.org.uk/sites/default/files/publications/IfG_Brexit_Euro_Court_Justice_WEB.pdf
https://theconversation.com/100-anos-del-golpe-de-estado-de-miguel-primo-de-rivera-213036
http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52016DC0950&from=en