
https://ec.europa.eu/home-affairs/system/files/2022-03/recommendation%20limit%20access%20individuals%20connected%20Russian%20Belarusian%20government%20citizenship%20residence%20EU%20through%20investor%20schemes_en.pdf

https://theconversation.com/quien-puede-convertirse-en-ciudadano-espanol-vericuetos-legales-para-obtener-la-nacionalidad-223771

http://www.russellgroup.ac.uk/news/blog-international-students/