483492.fig.0012a
(a)
483492.fig.0012b
(b)
483492.fig.0012c
(c)
483492.fig.0012d
(d)
Figure 12: (The antikink wave is bifurcated from the valley-shape solitary wave). The varying process for the graph of when , , , and , where , , , and (a) . (b) . (c) . (d) .