545607.fig.007a
(a)
545607.fig.007b
(b)
Figure 7: Explicit numerical solutions with = 1 , 𝛼 = 1 / 2 , 𝛽 = 2 / 3 , 𝜆 = 0 . 1 , 𝑏 = 1 , and 𝑘 = 1 / 3 .