A Study on the Interworking for SIP-Based Secure VoIP Communication with Security Protocols in the Heterogeneous Network. - Seokung Yoon; Hyuncheol Jung; Kyung-Seok Lee (FGIT-SecTech, 2009)

Criteria for Evaluating the Privacy Protection Level of Identity Management Services. - Hyangjin Lee; Inkyoung Jeun; Hyuncheol Jung (SECURWARE, 2009)