Google Scholar is a free searching platform that contains links to scientific articles, books, theses and other academic materials. It also provides many kinds of scientific information. Making use of multiple indexes makes it different from resources like eLIBRARY, which mainly includes articles from the RSCI (Russian Science Citation Index). Thus, the Google Scholar database is much larger.
Where can I get registered?
How can I get access to full-text materials?
How to optimize the search?
How to use Google Scholar to find an authoritative journal for your own publication?