Perry, William J., and Charles M. Vest. “The Science and Technology of Privacy Protection: Appendix L of ‘Protecting Individual Privacy in the Struggle Against Terrorists’”. Journal of Privacy and Confidentiality 2, no. 1 (September 1, 2010). Accessed November 23, 2024. https://journalprivacyconfidentiality.org/index.php/jpc/article/view/583.