https://www.ipg-journal.de/regionen/europa/artikel/detail/wind-in-ihren-segeln-4625/
https://www.ifri.org/sites/default/files/atoms/files/ifri_inozemstev_exode_juillet_2023.pdf
https://www.socialeurope.eu/2017/07/49234/
http://uk.reuters.com/article/us-britain-eu-negotiations-idUKKBN17R1XJ