TY - RPRT TI - Computer security considerations in federal procurements : a guide for procurement initiators, contracting officers, and computer security officials AU - Guttman, Barbara PY - 1992 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 800-4 DO - 10.6028/NIST.SP.800-4 ER -