A Real-Time Vehicle Detection and Tracking System in Outdoor Traffic Scenes. - Xin Li; XiaoCao Yao; Yi Lu Murphey; Robert Karlsen; Grant Gerhart (ICPR (2), 2004)

Speaker identification using speech and lip features. - Guobin Ou; Xin Li; XiaoCao Yao; Hongbin Jia; Yi Lu Murphey (IJCNN, 2005)