1. Alexander R McN (ed). Advances in Comparative and Environmental Physiology 11: Mechanics of Animal Locomotion, Springer Verlag, Berlin, 1992.
2. Alexander R McN. Animal Mechanics, Blackwell, Oxford, 1983.
3. Song S M, Waldron K J. Machines that Walk: The Adaptive Suspension Vehicle, MIT Press, Cambridge, Massachusetts, 1989.
4. Todd D J. Walking Machine, an Introduction to Legged Robots, Kogan Page Limited, London, 1985.
5. Raibert M N. Legged Robots that Balance, MIT Press, Cambridge, Massachusetts, 1986.