1. A survey of current exoskeletons and their control architectures and algorithms;Ansari,2015
2. A brief review on upper extremity robotic exoskeleton systems;Gopura,2011
3. On the stability of manipulators performing contact tasks;Hogan;IEEE Trans Robot Autom,1998
4. Robust control of dynamically interacting systems;Colgate;Int J Control,1988
5. Human arm impedance: characterization and modeling in 3D space;Artemiadis,2010