Figure 9
From: Multiwaves, breathers, lump and other solutions for the Heimburg model in biomembranes and nerves
3D and corresponding contour for solution \(\upsilon _{4,2}(x,t)\) with  \(d_2=2.1,~~d_4=0.1,~~d_6=0.1,~~m_1=0.05,~~v=0.25,~~w_2=1.03,~~w_3=1.08,~~ w_4=1.6\).
