Figure 1From: Bilinear Bäcklund transformations and explicit solutions of a \((3+1)\)-dimensional nonlinear equation Solitary waves. (a) Bell-shaped solitary wave with \(\Phi(y)= \operatorname{sech}(y)\), \(t=0\), \(z=0\), \(k=0.1\); (b) two bell-shaped solitary waves with \(\Phi(y)=\operatorname{sech}(y)\), \(t=0\), \(z=0\), \(k_{1}=0.1\), \(k_{2}=0.3\).Back to article page