The publication is registered at the International Center for Registration of ISSN Series (UNESCO, Paris, France), International Standard ISO 3297-98 "Information and documentation, International Standard Serial Number (ISSN)" interstate standard GOST 7.56-2002 "International Standard numbering of serial publications" ISSN 1999-4214, registration certificate dated 02/28/2013 An application for an Online ISSN has been submitted. Application number 150373