Evaluate and compare journals in the sciences and social sciences using citation data drawn from over 7,500 scholarly and technical journals. JCR is related to Web of Science and is based on similar data. Use JCR to find the most frequently cited journals in a field and/or a journal's impact factor, among other information.

Electronic full text of over 550 core journals in disciplines ranging from history to business to literature to science and mathematics. Coverage begins with the first issue of a title. The most recent three to five years worth of issues for a title are not normally included. All text is completely searchable. Holdings are updated annually.

Begun by Mathematical Reviews, MathSciNet is a comprehensive, research-level database covering the world's mathematical literature since 1940. Journals, conference proceedings, and books of mathematics research are covered. MathSciNet fosters the navigation of mathematics literature by providing links to original articles and other original documents, when available, by providing links from reviews to the text of more than 435,000 online articles in over 870 journals, although full-text, article-level access usually requires an institutional subscription to that journal. MathSciNet now also incorporates a citation tracking database.

Online version of the three Citation Indexes: Science, Social Sciences, and Arts and Humanities. In addition to searching by keyword, subject, author, etc. for articles in over 8,000 journals, one can do a "cited reference" search to see how frequently and where an article has been cited. Web of Science is one of our best databases. Also an excellent source for finding book reviews.