These are the ref. links to the paper
https://www.dhs.gov/xlibrary/assets/rma-risk-management-fundamentals.pdf
https://www.nrc.gov/docs/ML1216/ML12167A133.pdf
https://www.gpo.gov/fdsys/pkg/CHRG-113hhrg82579/html/CHRG-113hhrg82579.htm
