1. “Energy and Power in the Leg During Level Walking,”;Bresler,1953
2. “Energy and Power in the Legs of Above-Knee Amputees During Normal Level Walking,”;Bresler,1957
3. Cappozzo, A., and Leo, T., “Biomechanics of Walking Up Stairs,” Proc. of the Conf. on Robots, Man, and Systems, Udine, Italy, 1973, pp. 115–132.
4. “An Electro-hydraulic Knee-Torque Controller for a Prosthesis Simulator,”;Flowers;Trans. of the ASME Journal of Biomechanical Engineering,1977
5. Grimes, D.L., “An Active Multi-Mode Above-Knee Prosthesis Controller,” Ph.D. Thesis, Dept. of Mech. Engineering, M.I.T., 1979.