vdp3D.swf:,vdp3D1.swf, vdp3D2.swf: Behavior of the Van der Pol oscillator, which can be written as the system: dY/dt = [y2 ; μ(1-y12) y2-y1] for μ varying from 0 to 2.5. (16')

vdpPwS.swf: Power Spectrum of both variables: y1 and y2 for μ varying from 0 to 2.5. (16')