https://www.unhcr.org/gcr/GCR_English.pdf
https://wiiw.ac.at/shifting-patterns-of-migration-in-europe-new-source-countries-old-challenges-dlp-6915.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1036046/An_Inspection_of_UK_Visas_and_Immigration_Front_End_Services__August_2020_to_June_2021.pdf
http://www.cityam.com/259289/tony-blairs-brexit-open-britain-speech-full