Switched-current circuit design issues. - Terri S. Fiez; Guojin Liang; David J. Allstot (IEEE J. Solid State Circuits, 1991)

CMOS continuous-time current-mode filters for high-frequency applications. - Sang-Soo Lee; Rajesh H. Zele; David J. Allstot; Guojin Liang (IEEE J. Solid State Circuits, 1993)