After studying a paper about the IDES (Intrusion Detection Expert System), I want to know more about the IDES. The paper that I had studied was just an overview about IDES. It was "An Intrusion Detection Model" which is written by Dorthy E. Denning in IEEE Transactions on sofrware Engineering,Vol. SE-13, No. 2, FEB 1987. So I need more papers which describe IDES in detail. Is there anyone who can tell me how I can get the document on IDES or some otherpapers that expalins the mechanisms of IDES operation and its development? Pleas help me.