Design of semicausal two-dimensional recursive filters. - Hyokang Chang; Jake K. Aggarwal (ICASSP, 1978)

Stabilization of two-dimensional recursive filters. - Hyokang Chang; Jake K. Aggarwal (ICASSP, 1979)

Implementation of two-dimensional semicausal recursive digital filters. - Hyokang Chang; Jake K. Aggarwal (ICASSP, 1981)

Line, Trunk, and Service Circuit Test System of ITT System 1240. - Hyokang Chang; Steven Gregory Morton; Bhagwati Prasad Agrawal (IEEE J. Sel. Areas Commun., 1984)

A high quality BI-CELP speech coder at 8 kbit/s and below. - Soon Y. Kwon; Hochong Park; Hyokang Chang (ICASSP, 1997)