1. 1) L.R. Squire, D. Berg, F. Bloom, S.D. Lac, A. Ghosh and N.C. Spitzer, Eds.: Fundamental Neuroscience, Academic Press, 2008.
2. 2) A. Winter, David: A.B.C. (Anatomy, Biomechanics and Control) of Balance During Standing and Walking. Waterloo Biomechanics, 1995.
3. 3) R.J. Peterka: “Sensorimotor integration in human postural control,” Journal of Neurophysiol, vol.88, no.3, pp.1097–1118, 2002.
4. 4) S. Hyon, R. Osu and Y. Otaka: “Integration of multi-level postural balancing on humanoid robots,” IEEE International Conference on Robotics and Automation, pp.1549–1556, 2009.
5. 5) H.K. Khalil: “Nonlinear Systems,” 2nd ed., Prentice Hall, 1996.