
https://www.theatlantic.com/international/archive/2021/09/afghanistan-brain-drain/619959/?utm_source=newsletter&utm_medium=email&utm_campaign=03%2F09%2F21

https://www.publications.parliament.uk/pa/cm201617/cmselect/cmwomeq/799/799.pdf

http://blogs.lse.ac.uk/brexit/2018/05/15/switzerland-wanted-more-immigration-controls-but-economic-self-interest-will-probably-prevail/