1. Kazerooni, H.: The Berkeley lower extremity exoskeleton project. In: Experimental Robotics IX, pp. 9–15. Springer, Heidelberg (2006)
2. Phoenix [EB/OL].
http://www.suitx.com/phoenix.html
. Accessed 27 Dec 2019
3. Copilusi, C., Ceccarelli, M., Carbone, G.: Design and numerical characterization of a new leg exoskeleton for motion assistance. J. Robotica 33(5), 1–16 (2015)
4. Carbone, G., Ceccarelli, M.: Legged robotic systems. In: Cutting Edge Robotics. InTech (2005)
5. Tao, L., Ceccarelli, M.: Design and simulated characteristics of a new biped mechanism. Robotica 33(7), 1–21 (2014)