An international, multidisciplinary index to the literature of science, technology, and biomedicine. Over 4,000 journals representing all scientific disciplines are indexed. The database covers 1900 to the present, and records from January 1991 to the present include abstracts. Cited reference searching is a valuable feature of the database. Science citation index expanded and is available via ISI Web of Knowledge/Web of Science. The database is also known as SciSearch.