Versatile high input impedance voltage-mode three-inputs universal biquadratic filter. - Wei-Yuan Chiu; Jiun-Wei Horng; Zhao-Ren Wang (APCCAS, 2010)

Voltage-Mode Lowpass, Bandpass and Notch Filters Using Three Plus-Type CCIIs. - Jiun-Wei Horng; Zhao-Ren Wang; Chih-Cheng Liu (Circuits Syst., 2011)