https://cdn.who.int/media/docs/default-source/scientific-advisory-group-on-the-origins-of-novel-pathogens/sago-tors-final-20-aug-21_-(002).pdf
https://www.cantorsparadise.com/the-10-most-important-mathematical-functions-and-their-families-d8ec4fb46684
https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef18001en.pdf