
https://www.instituteforgovernment.org.uk/sites/default/files/publications/IfG_Brexit_Euro_Court_Justice_WEB.pdf

http://oegfe.at/wordpress/2017/05/oegfe-umfrage-oesterreicherinnen-wuenschen-sich-eine-flexible-und-effizientere-europaeische-union/

https://cdn.ceps.eu/wp-content/uploads/2023/09/2023_17_Potential-Impact-of-Ukrainian-Accession-on-the-EUs-Budget.pdf