Comment on the paper of Mostafa M. A. Khater et al. [Superlattices and Microstructures, 113 (2018) 346-358]

This comment concerns the doubtful new auxiliary equation method (Khater method) included in the above paper. We prove by simple calculation that this method is wrong. The exact solutions of the proposed nonlinear equation obtained in the above paper are all wrong. (C) 2018 Elsevier Ltd. All rights reserved.