1. Gordon, K.E., Ferris, D.P., Kuo, A.D.: Metabolic and mechanical energy costs of reducing vertical center of mass movement during gait. Arch. Phys. Med. Rehabil. 90, 136–144 (2009)
2. Kajita, S., Kanehiro, F., Kaneko, K., Yokoi, K., Hirukawa, H.: The 3D linear inverted pendulum mode: a simple modeling for a biped walking pattern generation. In: Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems, pp. 239–246 (2001)
3. Kajita, B.Y.S., Nagasaki, T., Kaneko, K., Hirukawa, H.: ZMP-based biped running control. In: Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and System (2007)
4. Kajita, S., Kanehiro, F., Kaneko, K., Fujiwara, K.: Biped walking pattern generation by using preview control of zero-moment point. In: Proceedings of the IEEE International Conference on Robotics and Automation, pp. 1620–1626 (2003)
5. Kuo, A.D., Donelan, J.M., Ruina, A.: Energetic consequences of walking like an inverted pendulum: step-to-step transitions. Exerc. Sport Sci. Rev. 33(2), 88–97 (2005)