“…Nowadays, some modern analytic methods are available for analyzing nonlinear evolution-type equations. For instance, tanh function method [20], homotopy perturbation method [21], variational iteration method [22], first integral method [23], Expfunction method [24], multiple Exp-function method [25], linear superposition principle [26], Wronskian technique [27], the Fexpansion method [28], the Jacobi elliptic-function method [29], the similarity transformation method [30], the ansätze method [31]. On the other hand, since it was first enunciated in 2008 by 0375-9601/$ -see front matter © 2011 Elsevier B.V. All rights reserved.…”