M. C. Teich, S. M. Khana, and S. E. Keilson. 1989. Nonlinear dynamics of cellular vibrations in the organ of Corti. Acta Otolaryngol (Stockholm) Suppl. 467:265-279.
J. Theiler, S. Eubank, A. Longtin, B. Garldrikian, and J. D. Farmer. 1992. Testing for nonlinearity in time series: The method of surrogate data. Physica D58:77-94.
B. J. West and A. L. Goldberger. 1987. Physiology in fractal dimensions. Am. Sci 75:354-365.
S. Wolfram. 1994. Cellular Automata and Complexity. Addison-Wesley, Reading, MA.
A. Wolf, J. B. Swift, H. L. Swinney, and J. A. Vastano. 1985. Determining Lyapunov exponents from a time series. Physica D16:285-317.
N. Xu and J. Xu. 1988. The fractal dimension of the EEG as a physical measure of conscious brain activities. Bull. Math. Biol. 50:559-565.
J. P. Zbilut, G. Mayer-Kress, P. A. Sobotka, M. O'Toole, and J. X. Thomas, Jr. 1989. Bifurcations and intrinsic chaos and l/f dynamics in an isolated perfused rat heart. Biol. Cybern. 61:371-381.