Supplements
Additional materials are not included in the total volume of the publication, they are not paid for additionally, they are submitted in the author's statement; they cannot be considered a publication, since they do not undergo peer review, they will not be assigned a DOI. The editors mark such materials with the word "Supplements", they are visible and accessible only through the journal's website and directly from the publication's online page. They can be printed in pdf format. The purpose of placing additional materials is to expand the authors' capabilities in detailing research methods and results to ensure the completeness of the presentation of the material. The decision on the need to include additional materials is made by the editor.