We are very thankful to you and our referee for your work! Especially we are thankful to the referee. His work has been done at a high professional level!

V. Uzhinsky, Joint Institute for Nuclear Research, Dubna, Russia

Thank you for the excellent service of EPJC during submission.

Anto Sulaksono, Universitas Indonesia, Depok, Indonesia

We are grateful to the Editor, to the Referee for careful reading of the manuscript, for the interesting and useful remarks, which allow us to improve the text and clarify some of the results.

Evgenij Martynov (Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine) and Basarab Nicolescu (Babes-Bolyai University, Cluj-Napoca, Romania)

We thank you and the Editorial Office for the editorial work during the submission and revision of the manuscripts. We are particularly grateful to the Referee for his/her valuable work which has contributed improving the scientific content of the manuscripts.

Claudio Cremaschini and Massimo Tessarotto, Silesian University in Opava, Czech Republic

We sincerely thank the referee for his/her invaluable comments during the review process. We certainly consider EPJC for future submissions.

Phung Van Dong

We especially appreciate the reviewer's patience and many helpful suggestions.

Zhang-Yu Nie

Thank you for the quick and efficient review process.

Tim Scanlon

Thank you for accepting the paper. Thanks also to the Associate Editor and the referee for their speedy and helpful comments during the review process. I will definitely keep EPJC in mind for future contributions.

Ravi Kuchimanchi

The author would like to thank two anonymous referees for pointing out several shortcomings in a previous version of this paper and for suggestions to improve its clarity.

J. H. Field

We feel that the inputs from the reviewing process have been very enriching and have significantly improved the quality of our discussion.
Best regards.

Anant