198185.fig.001a
(a)
198185.fig.001b
(b)
198185.fig.001c
(c)
198185.fig.001d
(d)
198185.fig.001e
(e)
198185.fig.001f
(f)
Figure 1: Simulation of model system (16a)–(16c) showing route to chaos and long-term persistence behaviour at different time levels (a) , (b) , (c) , (d) , (e) and (f) . See Table 1 for parameter values.