H∞ compensator design with minimal order observers. - Chin-Shung Hsu; Xianggang Yu; Hsi-Han Yeh; Siva S. Banda (IEEE Trans. Autom. Control., 1994)

H∞ deconvolution filter design and its application in image restoration. - Xianggang Yu; Chin-Shung Hsu; Roberto H. Bamberger; Stanley J. Reeves (ICASSP, 1995)

Luenberger observer-based H∞-compensator design for nonstandard problems. - Xianggang Yu; Chin-Shung Hsu (IEEE Trans. Autom. Control., 1996)