In its activities, the editorial board follows the recommendations of Committee on Publication Ethics (COPE) (http://publicationethics.org/resources/guidelines). As authors can act only persons who have made a significant contribution to the formation of the concept of publication. Submitted works must be original, not plagiarised. It is unacceptable to submit and publish the same article in different journals at the same time. The author should refer to the studies of predecessors, the results of which are significant in the development of issues the article is focused on. The controversy should be reasoned and correct.