User reputation based VoIP spam defense architecture. - TaiJin Lee; JongIl Jeong; HyungJong Kim 002; HyunChul Jeong; YooJae Won (ICOIN, 2009)

A study on the improvement of MIKEY PKE mode using TLS Handshake Protocol. - Seokung Yoon; Yeonjung Kang; Hwankuk Kim; HyunChul Jeong (ICTC, 2010)