1. Salisbury K, Eberman B, Levin M, et al. The design and control of an experimental whole-arm manipulator. Proc int symp Robot Res. 1989.
2. Whitney D. Historical perspective and state of the art in robot force control. In: IEEE international conference on robotics and automation. Proceedings. IEEE Xplore; 1985, p. 262–8.
3. Wettergreen D, Pangels H, Bares J. Behavior-based gait execution for the dante II walking robot. Ieee/rsj International Conference on Intelligent Robots and Systems 95. In: human Robot Interaction and Cooperative Robots, Proceedings. IEEE Xplore; vol. 31995, p. 274–9.
4. Xiao D, Ghosh BK, Xi N, et al. Sensor-based hybrid position/force control of a robot manipulator in an uncalibrated environment. IEEE Trans Control Syst Technol. 2000;8(4):635–45.
5. Wolf S, Hirzinger G. A new variable stiffness design: matching requirements of the next robot generation. In: International conference on robotics and automation. DLR; 2008. p. 1741–6.