1. Badler, N. I., Hollick, M. J., and Granieri, J. P. Real-time control of a virtual human using minimal sensors. Presence 2, 1 (1993), 82–86.
2. Badler, N. I., Phillips, C. B., and Webber, B. L. Simulating Humans: Computer Graphics Animation and Control. Oxford University Press, Oxford, UK, 1993.
3. Bruderlin, A., and Williams, L. Motion signal processing. In Computer Graphics (Aug. 1995), pp. 97–104. Proceedings of SIGGRAPH 95.
4. Gill, P. E., Murray, W., and Wright, M. H. Practical Optimization. Academic Press, 1981.
5. Hampel, F. R., Ronchetti, E. M., Rousseeuw, P. J., and Stahel, W. A. Robust Statistics: The Approach Based on Influence Functions. John H. Wiley, New York, 1986.