A study on an adaptive gait for a quadruped walking robot under external forces. - Dong-oh Kang; Yun-Jung Lee; Seung-Ha Lee; Yeh Sun Hong; Zeungnam Bien (ICRA, 1997)

Real Time Obstacle Avoidance for Mobile Robot Using Limit-Cycle and Vector Field Method. - Min Seok Jie; Joong-Hwan Baek; Yeh Sun Hong; Kang Woong Lee (KES (1), 2006)