Byung kwan Lee Seung Hae Yang Dong-Hyuck Kwon Dai-Youn Kim PGNIDS(Pattern-Graph Based Network Intrusion Detection System) Design. 38-47 2006 conf/iccsa/2006-3 ICCSA (3) http://dx.doi.org/10.1007/11751595_5 db/conf/iccsa/iccsa2006-3.html#LeeYKK06