Guttman, B.
and Roback, E.
(1995),
An Introduction to Computer Security: the NIST Handbook, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.SP.800-12r1, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=890080 (Accessed May 13, 2026)