https://emergency.cdc.gov/agent/cyanide/basics/facts.asp#:~:text=Cyanide%20prevents%20the%20cells%20of,use%20a%20lot%20of%20oxygen.

https://www.centerforhealthsecurity.org/our-work/publications/cyanide-fact-sheet

https://www.health.ny.gov/environmental/emergency/chemical_terrorism/cyanide_general.htm

https://www.thoughtco.com/overview-of-cyanide-poison-609287

https://www.britannica.com/science/cyanide-poisoning

https://www.nytimes.com/1995/05/18/world/how-tokyo-barely-escaped-even-deadlier-subway-attack.html