A high frequency bandpass continuous-time filter with automatic frequency and Q-factor tuning. - Hengsheng Liu; Aydin I. Karsilayan (ISCAS (1), 2001)

An automatic tuning scheme for high frequency bandpass filters. - Hengsheng Liu; Aydin I. Karsilayan (ISCAS (3), 2002)

An accurate automatic tuning scheme for high-Q continuous-time bandpass filters based on amplitude comparison. - Hengsheng Liu; Aydin I. Karsilayan (IEEE Trans. Circuits Syst. II Express Briefs, 2003)

MSIIPL THU’s Slot-Filling Method for TAC-KBP 2015. - Yangcheng Zhang; Hengsheng Liu; Gang Zhao; Ji Wu 002 (TAC, 2015)