http://spinelligroup.eu/sites/spinelli/files/2018_manifesto_en.pdf
https://elpais.com/opinion/2023-12-13/la-batalla-de-las-dos-europas.html
https://www.socialeurope.eu/facing-europes-huge-challenges
https://wiiw.ac.at/a-stronger-cee-for-a-stronger-europe-dlp-6916.pdf