Hea-Sook Park Eun-Kyung Jung Doo-Kwon Baik Client-Class based Admission Control Algorithm in Web Server Using Cluster Analysis. 424-430 2005 conf/sera/2005 SERA http://doi.ieeecomputersociety.org/10.1109/SERA.2005.29 db/conf/sera/sera2005.html#ParkJB05