To help authors

UDC

When specifying the UDC in the article, you can use one of the most common http://teacode.com/online/udc resources. Sometimes it may be present in the article space definition (often geographic location): in this case the regional UDC (http://nlib.sakha.ru/Cataloque/udk/Tab-ie.htm) is added to the principal. General rules of registration UDC - https://ru.wikipedia.org/wiki/Универсальная_десятичная_классификация