Short Retraction Notice

The following article has been retracted due to the authors’ strong personal reason about the indexing databases of Applied Mathematics.
This article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. Aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused.
Editor guiding this retraction: Prof. Chris Cannings (EIC of AM).
The full retraction notice in PDF is preceding the original paper, which is marked "RETRACTED".