A. Ajoudani, Fang, C., Tsagarakis, N. G., and Bicchi, A., ?Reduced-Complexity Representation of the Human Arm Active Endpoint Stiffness for Supervisory Control of Remote Manipulation?, International Journal of Robotics Research, vol. 37, no. 1, 2017 [Online]. Available: https://journals.sagepub.com/doi/full/10.1177/0278364917744035