1. R.E. Bellman, Adaptive Control Processes: A Guided Tour, Princeton University Press, Princeton, NJ, 1957.
2. C.-M. Chew, G. Pratt, A general control architecture for dynamic bipedal walking, in: Proceedings of the IEEE International Conference on Robotics and Automation, San Francisco, CA, 2000.
3. C.-M. Chew, Blind walking of a planar biped over sloped terrain, Master’s Thesis, Massachusetts Institute of Technology, Cambridge, MA, February 1998.
4. C.-M. Chew, J.E. Pratt, G.A. Pratt, Blind walking of a planar bipedal robot on sloped terrain, in: Proceedings of the IEEE International Conference on Robotics and Automation, Detroit, MI, 1999.
5. E. Dunn, R. Howe, Foot placement and velocity control in smooth bipedal walking, in: Proceedings of the IEEE International Conference on Robotics and Automation, Minneapolis, MN, 1996, pp. 578–583.