A Role-Based Dynamic Authorization Model and Its Implementation in PMI. - Hui Xie; Bin Zhang 015; Dianyou Hu (CSSE (3), 2008)

Design and Implementation of Secure Instant Messaging System Based on MSN. - Bin Zhang 015; Meng Feng; Houren Xiong; Dianyou Hu (ISCSCT (1), 2008)