TY - RPRT TI - Engineering principles for information technology security (a baseline for achieving security), revision a AU - Stoneburner, G AU - Hayden, C AU - Feringa, A PY - 2004 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 800-27ra DO - 10.6028/NIST.SP.800-27ra ER -