Requejo PS, Wahl DP, Bontrager EL, Newsam CJ, Gronley JK, Mulroy SJ, Perry J. Upper extremity kinetics during lofstrand crutch-assisted gait. Med Eng Physics (In press)

Wahl DP, Bontrager EL, Requejo PS, Gronley JK, Mulroy S, Perry J. Upper extremity kinetics during lofstrand crutch assisted gait. Gait & Posture, 2003 (Abstract)

Bontrager EL. Instrumented gait analysis systems. In: Gait Analysis in the Science of Rehabilitation, Department of Veterans Affairs, 2:11-32, 1998.

Rao, SS, Bontrager, EL, Powers, CM and Perry, J: "Attitude vector" & Euler/Cardan representations of L/E kinematics. Ann Biomed Eng, 23:119, 1995.(Abstract)

Perry, J, Bontrager, EL, Bogey, RA, Gronley, JK and Barnes, LA: The Rancho EMG Analyzer: a computerized system for gait analysis. J Biomed Eng, 15:487-496, 1993.

Rao, SR, Clayton, RM, Driessen, KM, Torburn, L, Winstein, CJ and Perry, J: Vicon measurement error and reliability of joint kinematics in free and fast walking. Phys Ther, 72:s661992.

Perry, J, Antonelli, DJ, Barnes, L and Bontrager, EL: Footswitch Stride Analyzer. Final Project Report, V.A. Contract V101(134) P-538. Professional Staff Assoc. of Rancho Los Amigos Hospital, Downey, Ca. 1981.

Perry, J, Bontrager, E and Antonelli, D: Footswitch definition of basic gait characteristics. In Disability. edited by Kenedi, RM, Paul, JP and Hughes, J. 131-135. The Macmillan Press LTD, London, 1979.

Karchak, A, Jr., Allen, JR, Perry, J and Dail, C: Photo recording electromyograph - a unique method of physiological instrumentation. In Proceedings of the San Diego Symposium for Biomedical Engineering. 111-114. San Diego Symposium for Biomedical Engineering, La Jolla, Ca. 1963.