TY - RPRT TI - Assessing security requirements for controlled unclassified information AU - Ron, Ross AU - Kelley, Demspey AU - Victoria, Pilliterri PY - 2018 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 800-171A DO - 10.6028/NIST.SP.800-171A ER -