http://neilcummins.com/tie_cog.pdf
https://www.brookings.edu/blog/up-front/2020/05/15/developing-policies-for-effective-covid-19-containment-the-trace-model/?utm_campaign=BrookingsBrief&utm_source=hs_email&utm_medium=email&utm_content=88024714
https://ec.europa.eu/info/sites/info/files/opinion-comite-adhoc-2016-10-26_en.pdf
http://www.fern.org/sites/fern.org/files/LULUCF%20proposal%202016.pdf