Duties of Authors

Reporting standards
One person can be an author / co-author of a maximum of two articles in one issue. Authors of original research papers should present an accurate description of the work performed as well as an objective discussion of its significance. Papers reporting experimental data without adequate interpretation are not acceptable. Underlying data should be represented precisely in the manuscript. The manuscript should contain sufficient details and references to permit others to replicate the work. Fraudulent or knowingly inaccurate statements show an unethical behaviour and are unacceptable.

Data Access and Retention
Authors may be asked to provide the raw data in connection with the manuscript for editorial review. They should be prepared to provide public access to such data if practicable, provided that the confidentiality of the participants and legal rights concerning proprietary can be protected. In any event authors should be prepared to retain such data for a reasonable time after publication.

Originality, Plagiarism and Using Third-Party Material
Authors should ensure that they have written entirely original works, and if they have used the work and/or words of others, this has been appropriately cited or quoted.
Plagiarism takes many forms, from ‘passing off’ another’s paper as the author’s own paper, to copying or paraphrasing substantial parts of another’s paper (without attribution), to claiming as own results from research conducted by others. Plagiarism in all its forms constitutes unethical publishing behaviour and is unacceptable.
The necessary written permission has to be obtained from the copyright owner prior to draft submission for using third party material.

All submissions are checked against plagiarism with PlagScan and PaperRater Premium.

Multiple, Redundant or Concurrent Publication
Authors should not in general publish manuscripts presenting essentially the same research in more than one journal or primary publication. Submitting the same manuscript to more than one journal concurrently is unethical publishing behaviour and is unacceptable.

Acknowledgement of Sources
Authors should always ensure a proper acknowledgment of the work of others. Authors should cite publications that have been influential in determining the nature of the reported work. Authors should not use information obtained in the course of providing confidential services, such as refereeing manuscripts or grant applications, unless they have obtained the explicit written permission of the author(s) of the work involved in these services.

Authorship of the Paper
Authorship should be limited to those who have made a significant contribution to the conception, design, completion, or interpretation of the reported study, or have drafted the manuscript or revised it critically for important intellectual content. All those who have made significant contributions should be listed as co-authors. In case there are others who have participated in certain substantive aspects to the work reported in the manuscript (such as technical help, writing and editing assistance, general support) but who do not meet the criteria for authorship they must not be listed as an author, but should be acknowledged in the “Acknowledgements” section after their written permission to be named has been obtained. The corresponding author should ensure that all proper co-authors and no inproper co-authors are included in the paper, and that all co-authors have seen and approved the final version of the manuscript and have agreed to its submission for publication.
The corresponding author has the right to withdraw the work submitted for publication before the start of the pre-press preparation at the latest.
Complaints against the journal, its staff, editorial board or publisher are treated according to the laws of the Republic of Bulgaria.

Hazards and human or animal subjects
If the work involves chemicals, procedures or equipment that have any unusual hazards inherent in their use, the authors must clearly identify these in the manuscript.

Disclosure and Conflicts of Interest
Authors should disclose in their manuscript (generally by including a statement at the end of the manuscript) any financial or other substantive conflict of interest that might be construed to influence the results or interpretation of their manuscript.
Examples of potential conflicts of interest which should be disclosed include employment, consultancies, stock ownership, honoraria, paid expert testimony, patent applications/registrations, and grants or other funding. All sources of financial support for the work should be disclosed (including the grant number or other reference number if any). Potential conflicts of interest should be disclosed at the earliest possible stage.

Participation in the peer review process
Authors are obliged to assist the peer review process and cooperate fully by responding promptly to editors’ requests for raw data, clarifications, and proof of ethics approval, and copyright permissions. In the case of a first decision of “revisions necessary”, authors should respond to the reviewers’ comments systematically, and timely, revising and re-submitting their manuscript to the journal by the deadline given.

Fundamental errors in published works
When authors discover a significant error or inaccuracy in their own published work, it is the author’s obligation to promptly notify the Editor-in-Chief and cooperate with the editor to either retract the paper or to publish an appropriate erratum.