DECA: A Discrete-Valued Data Clustering Algorithm. - Andrew K. C. Wong; David C. C. Wang (IEEE Trans. Pattern Anal. Mach. Intell., 1979)

Digital image enhancement: A survey. - David C. C. Wang; Anthony H. Vagnucci; Ching-Chung Li (Comput. Vis. Graph. Image Process., 1983)