http://oegfe.at/wordpress/wp-content/uploads/2017/05/OEGfE_Policy_Brief-2017.13.pdf
https://www.opendemocracy.net/can-europe-make-it/joan-costa-alegret/catalonia-s-de-facto-independence?utm_source=Daily+Newsletter&utm_campaign=d40bbfc4f2-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-d40bbfc4f2-407405485
https://www.socialeurope.eu/dutch-social-democracy-reuniting-fragmented-left
https://ukandeu.ac.uk/explainers/the-ukraine-eu-relationship/?mc_cid=b812d9af50&mc_eid=815b1928ec