@inproceedings{publication-9003, address={The 16th International Conference on Advanced Robotics, ICAR 2013}, author={Vu, Hung Quy and Hauser, Helmut and Leach, Derek and Pfeifer, Rolf}, booktitle={The 16th International Conference on Advanced Robotics, ICAR 2013}, doi={10.1109/ICAR.2013.6766488}, isbn={978-1-4799-2722-7}, month={NOV}, publisher={IEEE}, title={A variable stiffness mechanism for improving energy efficiency of a planar single-legged hopping robot}, year=2013, }