https://ec.europa.eu/commission/sites/beta-political/files/outline_of_the_political_declaration.pdf
https://assets.ctfassets.net/rdwvqctnt75b/7iQEHtrkIbLcrUkduGmo9b/cb429a657e97cad61e61853c05c8c4d1/Hansard-Society__Audit-of-Political-Engagement-16__2019-report.pdf
https://theconversation.com/los-cuatro-desafios-de-una-legislatura-altamente-inflamable-en-espana-217758
https://www.bloomberg.com/news/articles/2017-08-25/brexit-bulletin-when-silence-isn-t-golden