On extracting the wire curves from multiple face models for facial animation. - Hyewon Pyun; Hyun Joon Shin; Sung Yong Shin (Comput. Graph., 2004)

An example-based approach for facial expression cloning. - Hyewon Pyun; Yejin Kim 002; Wonseok Chae; Hyung Woo Kang; Sung Yong Shin (SIGGRAPH Courses, 2006)