Topological and non-topological solitons of the generalized Klein-Gordon equations. - Ryan Sassaman; Anjan Biswas (Appl. Math. Comput., 2009)

Topological and non-topological solitons of nonlinear Klein-Gordon equations by He's semi-inverse variational principle. - Ryan Sassaman; Alireza Heidari; Anjan Biswas (J. Frankl. Inst., 2010)