http://www.msz.gov.pl/en/news/deputy_minister_renata_szczech_takes_part_in_a_debate_on_europe_s_future
https://www.instituteforgovernment.org.uk/sites/default/files/publications/International-civil-service-effectiveness-index-July-17.pdf
https://www.ceps.eu/will-putins-war-in-ukraine-make-the-eu-stronger/