Searchable database of citations for articles in 'Mathematical Reviews' from the American Mathematical Society. Covers mathematics, statistics, engineering, and the physical sciences. Full-text links to many original articles from the American Mathematical Society. Tutorials are available at http://www.mathscinet.info/index.html
Multidisciplinary index to scholarly and authoritative articles. Provides access to all three parts of the Citation Index: Arts and Humanities, Social Science and Science. Search by subject, author, journal title. Cited Reference Search finds articles that cite an author or article that you specify.