F.  Negrello, Garabini, M., Catalano, M. G., Kryczka, P., Choi, W., Caldwell, D. G., Bicchi, A., and Tsagarakis, N. G., ? WALK-MAN humanoid lower body design optimization for enhanced physical performance?, in IEEE International Conference of Robotics and Automation (ICRA2016), Stockholm, Sweden, May 16-21, 2016 , 2016, pp. 1817 - 1824 [Online]. Available: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7487327