1. Kollet K W, Potash R L, Potash R J. Exercise system for physical rehabilitation and fitness. US PATENT 20140135174A1, 2014.
2. Bhugra K, Smith J. Exoskeleton for Gait Assistance and Rehabilitation, US Patent, WO 2013019749 A, 2012.
3. Scholz J, Agrawal S, Mao Y. Wearable Cable-Driven Exo-Skeleton for Functional Arm Training, US Patent, 9144528 B2, 2015.
4. Ceccarelli M. Fundamentals of Mechanics of Robotic Manipulation, Springer, Amsterdam, Netherlands, 2004.
5. Landsberger S E, Sheridan T B. A new design for parallel link manipulator. Proceedings of the International Conference on Cybernetics and Society, Tucson, Arizona, USA, 1985, 812–814.