Scopus CiteScore™, a free Elsevier product, measures citation impact for journals, book series, conference proceedings and trade journals. The CiteScore Tracker is calculated monthly.
CiteScore, SCImago Journal Rank (SJR) and Source Normalized Impact per Paper (SNIP) are the metrics tools available to measure data through the Scopus database. This enables journals from disciplines with different citation behaviours (number and frequency of citations) to be compared.
SJR excludes journal self-citations above 33% of the total received by a journal. This ensures that an ‘artificial’ increase of journal self-citation stops having any effect when it surpasses standard journal self-citation practices.