http://ec.europa.eu/eurostat/statistics-explained/index.php/Acquisition_of_citizenship_statistics
https://www.ifri.org/sites/default/files/atoms/files/ifri_inozemstev_exode_juillet_2023.pdf
https://capx.co/immigration-means-low-wages-this-years-nobel-prize-winner-has-other-ideas/?utm_source=newsletter&utm_medium=email&utm_campaign=12%2F10%2F2021+