TY  - RPRT
TI  - Volume I : guide for mapping types of information and information systems to security categories
AU  - Barker, William C
PY  - 2004
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST SP 800-60ver2v1
DO  - 10.6028/NIST.SP.800-60ver2v1
ER  -