S.  Mghames, Laghi, M., C. Della Santina,, Garabini, M., Catalano, M. G., Grioli, G., and Bicchi, A., ?Design, control and validation of the variable stiffness exoskeleton FLExo?, in International Conference on Rehabilitation Robotics (ICORR), London, UK, 17-20 July 2017, 2017, pp. 539 - 546 [Online]. Available: http://ieeexplore.ieee.org/document/8009304/

M.  Laghi, A. Ajoudani, Catalano, M. G., and Bicchi, A., ?Tele-Impedance with Force Feedback under Communication Time Delay?, in IEEE International Conference of Intelligent Robots and Systems (IROS2017), Vancouver, Canada, September 24?28, 2017, 2017.