Scopus claims to be the largest abstract and citation database of peer-reviewed literature (mostly journals) with bibliometrics tools to track, analyze and visualize research.
Scopus content focuses mostly on peer reviewed journals, with citation records from Medline as well as most of the content from Embase. Scopus indexes over 25,000 serial titles from more than 5,000 international publishers. While not a major focus, the database also includes citations to trade journals, book series, books, and conference materials.
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