Prague, 28 June 2017
Thank you very much for your superb editing of the manuscript.
Thanks to the referees for their helpful suggestions, and thanks to all EPJA Editorial and Production Office team for their professionalism and kindness! Thank you!
Thank you, yet again, for an excellent set of proofs and the meticulous work you do! ... We are glad to see that EPJA maintains its high standards.
We express our heartfelt thanks for the valuable suggestions, which helped us for improving our manuscript.
It has been a pleasure to work with you since we submitted our draft last September, and I wanted to thank you for your help during all stages of the publication process. Please extend our gratitude to the whole EPJA team.
Dear Mr. Turci, I would like to thank you very much for your immediate response and let you know that the paper is of excellent quality and that you may proceed to the publishing process.
We are grateful to the referees for their very detailed review of our manuscript and for the important remarks and corrections. The referees are very nice experts of the subject of the paper. The manuscript has been revised with our pleasure. Thank you very much for the choice of the referees who were high level experts and kind scientists.