The author of the article is considered to be the person who made a significant contribution either to the conception or analysis and interpretation of the data; drafted the original typescript or revised it critically for important intellectual content; decided on the final version of the paper and agreed to its submission for publication.

All persons who participated in the preparation of the text or the preceding research should be listed together with the indication of the nature of their contribution. The main  author should ensure that all co-authors have approved the final version of the typescript and agreed to its submission for publication.

The contributed text has to adhere to the principles of ‘ghostwriting firewall’, based on the guidelines for academic journals.

All disclosed cases of ghostwriting (hidden contribution of an author or writing the text on request of the author) and guest authorship (adding to the list of authors of people whose contribution to the text was negligible) will be made public on the websites of our Journal. The institution employing the author will also be notified.

In justified cases the Editorial Board may request a declaration of the author’s or authors’ contribution in accordance with the principles of the ghostwriting firewall.

Authors may be asked to submit a declaration on the sources of financial means for funding the publication, contribution from research institutions, associations and other entities (financial disclosure).

Any changes to the information about the authorship require the written consent of all interested parties. Such consent should be expressed by each of them separately, in an e-mail addressed directly to the Editor-in-Chief of the Journal. The consent of each of the authors to change the information about the authorship of the submitted article or of an already published article must take the form of a written statement.

Should the author hide co-authors of the text or disclose guest authorship cases in already published articles, the possible costs of editorial changes shall be covered by the author of the publication.