A Human Face Image Searching System Using Sketch. - C. H. Man; Pong Chi Yuen (MVA, 2002)

Enhanced Human Face Image Searching System using Relevance Feedback. - Pong Chi Yuen; C. H. Man (FGR, 2004)

Human Face Image Searching System Using Sketches. - Pong Chi Yuen; C. H. Man (IEEE Trans. Syst. Man Cybern. Part A, 2007)