428327.fig.005a
(a)
428327.fig.005b
(b)
428327.fig.005c
(c)
428327.fig.005d
(d)
428327.fig.005e
(e)
428327.fig.005f
(f)
428327.fig.005g
(g)
428327.fig.005h
(h)
Figure 5: Phase portraits for (a) , (b) , (c) , (d) , (e) , (f) , (g) , and (h) for the case where , .