AR-ARMA HMM and its application to speech enhancement. - Joohun Lee; JongJoo Lee; Ki Yong Lee; Katsuhiko Shirai (SIP, 2001)

Robust Speaker Recognition Against Utterance Variations. - JongJoo Lee; JaeYeol Rheem; Ki Yong Lee (ICCSA (2), 2003)

GMM Based on Local Fuzzy PCA for Speaker Identification. - JongJoo Lee; JaeYeol Rheem; Ki Yong Lee (IDEAL, 2003)