The OTD Editorial Board follows the reviewing procedure of scientific articles in accordance with “basic principles for reviewing publications in journals” (https://onlinelibrary.wiley.com/doi/full/10.1002/leap.1222). It means that the reviewing procedure takes place with the principles of confidentiality, that is the author(s) and the reviewer(s) do not know each other’s identity (double-blind review procedure). The reviewer prepares a written assessment of the article on the appropriate form. The author/authors Reed to refer in details to all critical opinions of the reviewer/reviewers of the article. The correspondence between the author and the reviewer is done only through the OTD Editorial Board. All accepted comments must be considered in the appropriate correction of the work. In case of observations with which he disagrees, the author prepares clear and explicit argumentation, pointing the disagreement with the reviewer’s opinion. The article is submitted to be published with two explicit positive reviews. In case of one negative review, there is a need of appointing a third reviewer whose assessment will decide on admission to the publication of the article or its rejection. Texts of not a scientific character do not require any review and are eligible to print directly by the Editorial Board.