Performance assessment of a pushrim-activated power-assisted wheelchair control system. - Rory A. Cooper; Thomas A. Corfman; Shirley Fitzgerald; Michael L. Boninger; Donald M. Spaeth; William Ammer; Julianna Arva (IEEE Trans. Control. Syst. Technol., 2002)

Analysis of driving backward in an electric-powered wheelchair. - Dan Ding; Rory A. Cooper; Songfeng Guo; Thomas A. Corfman (IEEE Trans. Control. Syst. Technol., 2004)