1. Lower extremity exoskeletons and active orthoses: challenges and state-of-the-art;Dollar;IEEE Trans Robot,2008
2. Functional electrical stimulation: standing and walking after spinal cord injury;Kralj,1989
3. Advances in functional electrical stimulation (FES);Popović;J Electromyogr Kinesiol,2014
4. Hybrid actuators for orthotic systems: hybrid assistive systems;Tomović,1973
5. Development of hybrid orthosis for standing, walking, and stair climbing after spinal cord injury;Kobetic;J Rehabil Res Dev,2009