https://www.feps-europe.eu/articles/36-project/68-feps-covid-resonse.html
http://intsse.com/wswspdf/en/articles/2019/02/15/zucm-f15.pdf
https://www.brookings.edu/techstream/inaccurate-and-insecure-why-contact-tracing-apps-could-be-a-disaster/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=87470595
https://beyond-coal.eu/wp-content/uploads/2019/12/Sandbag-CoalBook2019-WEB.pdf