
https://www.lefigaro.fr/politique/nouvelle-caledonie-l-executif-prepare-un-referendum-a-haut-risque-20210525

https://www.politico.eu/newsletter/eu-confidential/politico-eu-confidential-recovery-recipes-presidential-problems-scottish-election/

https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef18025en.pdf