Experimental evaluation of a portable powered ankle-foot orthosis. - Kenneth A. Shorter; Yifan David Li; Emily A. Morris; Geza F. Kogler; Elizabeth T. Hsiao-Wecksler (EMBC, 2011)

Fuel efficiency of a Portable Powered Ankle-Foot Orthosis. - Morgan K. Boes; Mazharul Islam; Yifan David Li; Elizabeth T. Hsiao-Wecksler (ICORR, 2013)

Gait mode recognition and control for a portable-powered ankle-foot orthosis. - Yifan David Li; Elizabeth T. Hsiao-Wecksler (ICORR, 2013)