
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef1609en.pdf

https://ukandeu.ac.uk/explainers/eu-switzerland-negotiations-agreement/?mc_cid=1b270f9c56&mc_eid=815b1928ec

https://www.politicalcapital.hu/pc-admin/source/documents/zinc_revisionism_comparative.pdf