Wallace, D.
and Fujii, R.
(1989),
Software Verification and Validation: Its Role in Computer Assurance and Its Relationship with Software Project Management Standards, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905731
(Accessed December 12, 2024)