(a)
(b)
(c)
(d)
(e)
Figure 1:
(a) Bifurcation diagram in
space. (b) The bifurcation diagram in

plane and in

plane. (c) Spectrum of Lyapunov exponents corresponding to (b). (d) The attractor of (
5
) with
(e) Time series of
and
of the same parameters.