1. K. J. Waldron, “Some Thoughts on the Design of Power Systems for Legged Vehicles,” Advances in Multibody Systems and Mechatronics, Gerhard-Mercator-Universität, Duisburg, pp. 389–394, 1999.
2. V. Babitsky, A. Kovaleva and A. Shipilov, “Relieved control in cyclic systems,” Arch. Appl. Mech. 65:488–495, 1995.
3. W. O. Schiehlen, “Power Demand of Actively Controlled Multibody Systems,” ASME Proceedings of DETC2001, ASME Design Engineering Conference, DETC2001/VIB-21343, Pittsburgh, Pennsylvania, USA, 2001.
4. P. L. Falb and W. A. Wolovich, “Decoupling in the Design and Synthesis of Multivariable Control Systems,” IEEE Transactions on Automatic Control 12(6):651–655, 1967.
5. J.J. Craig, Introduction to Robotics: Mechanics and Control, Reading, Massachusetts, Addison-Wesley, 1986.