
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://www.globallegalinsights.com/practice-areas/bribery-and-corruption/global-legal-insights—bribery-and-corruption/germany

https://www.emcdda.europa.eu/system/files/publications/13238/TD0420439FRN.pdf