Press, P.O. Box Office 1360, Santa Cruz, CA 1982. Nonlinear Oscillations, Dynamical Systems and Bifurcations of Vector Fields. John Guckenheimer and Phillip Holmes, Springer-Verlag, N.Y. 1983. 166 HOUSE_OVERSIGHT_013666 --- PAGE BREAK --- Psychiatric Aspects of Neurologic Disease. D. Frank Benson and Dietric