TY  - RPRT
TI  - Intrusion detection systems 
AU  - Bace, Rebecca
AU  - Mell, Peter
PY  - 2001
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST SP 800-31
DO  - 10.6028/NIST.SP.800-31
ER  -