Small steps for mankind: Towards a kinematically driven dynamic simulation of curved path walking. - Cornelius W. A. M. van Overveld; Hyeongseok Ko (Comput. Animat. Virtual Worlds, 1994)

Extracting the Movement of Lip and Tongue During Articulation. - Hanhoon Park; Seung-Wook Hong; Jong-Il Park; Sung-Kyun Moon; Hyeongseok Ko (PCM (1), 2005)