1. J.L. Herder, Energy-free Systems, Theory, Conception and Design of Statically Balanced Spring Mechanisms, (Ph.D. thesis), Delft University of Technology, Delft, The Netherlands, November 2001.
2. Intrinsically safe robot arm: adjustable static balancing and low power actuation;Vermeulen;Int. J. Social. Robot.,2010
3. V. Hayward, P. Gregorio, O. Astley, S. Greenish, M. Doyon, L. Lessard, J. McDougall, I. Sinclair, S. Boelen, X. Chen et al., Freedom-7: a high fidelity seven axis haptic device with application to surgical training, in: Experimental Robotics V, Springer. 〈http://link.springer.com/chapter/10.1007/BFb0112983〉, 1998, pp. 443–456.
4. R. Fan, C. Zhao, H. Zhao, Improvement of dynamic transparency of haptic devices by using spring balance, in: Proceedings of the 2012 IEEE International Conference on Robotics and Biomimetics (ROBIO). 〈http://dx.doi.org/10.1109/ROBIO.2012.6491112〉, 2012, pp. 1075–1080.
5. A. Gopalswamy, P. Gupta, M. Vidyasagar, A new parallelogram linkage configuration for gravity compensation using torsional springs, in: Proceedings of the 1992 IEEE International Conference on Robotics and Automation. 〈http://dx.doi.org/10.1109/ROBOT.1992.220291〉, vol. 1, 1992, pp. 664–669.