Modifications of the Multistep Optimal Homotopy Asymptotic Method to Some Nonlinear KdV-Equations. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 11, n. 2, p. 537–552, 2018. DOI: 10.29020/nybg.ejpam.v11i2.3194. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/3194.. Acesso em: 2 may. 2024.