Secure Enterprise Information Systems: A Mutual Authentication Scheme for Roaming Users Using Memorable Information. - Lin Yang; Xinghua Ruan; Jingdong Xu; Gongyi Wu (CONFENIS (1), 2007)

A Secure Privacy-Preserving Hierarchical Location Service for Mobile Ad Hoc Networks. - Xinghua Ruan; Boyang Yu; Jingdong Xu; Lin Yang (MSN, 2007)