1. Agarwal, G., Gottlieb, C., 1977. Compliance of the human ankle joint. Transactions of the ASME—Journal of Biomechanical Engineering August, 166–170.
2. Gait characterization via dynamic joint stiffness;Davis;Gait and Posture,1996
3. Once more on the equilibrium-point hypothesis (lambda model) for motor control;Feldman;Journal of Motor Behavior,1986
4. Fujita, M., Matsusaka, N., Norimatsu, T., Suzuki, R., 1985. The role of the ankle plantar flexors in level walking. In: Winter, D., et al. (Eds.), Biomechanics, Human Kinetics Publishers, Champaign, IL, Vol. IX-A, pp. 484–488.
5. Dynamics of human ankle stiffness;Hunter;Journal of Biomechanics,1982