Helpful info

Mendeley online service is a free reference Manager and academic social network, lists among its services are assistance in the design of links and References (www.mendeley.com/)

ORCID digital identifier to distinguish you from every other researcher and, through integration in key research processes, keep in contact with you and your professional activities (http://orcid.org/)

Online classifier UDC Summary (UDCS) provides a selection of around 2,600 classes from the whole system, which includes more than 70,000 entries (www.udcc.org/udcsummary/php/)

For registration of the list of referenced literature the authors can be useful, this service (vak.in.ua/do.php)