Fan Zhu Horace Ho-Shing Ip Apple W. P. Fok Jiaheng Cao PeRES: A Personalized Recommendation Education System Based on Multi-agents & SCORM. 31-42 2007 ICWL http://dx.doi.org/10.1007/978-3-540-78139-4_4 conf/icwl/2007 db/conf/icwl/icwl2007.html#ZhuIFC07