Fredrik Valeur Giovanni Vigna Christopher Krügel Richard A. Kemmerer A Comprehensive Approach to Intrusion Detection Alert Correlation. 146-169 2004 1 IEEE Trans. Dependable Sec. Comput. 3 http://csdl.computer.org/comp/trans/tq/2004/03/q0146abs.htm db/journals/tdsc/tdsc1.html#ValeurVKK04