|Web of Science
||Includes Arts & Humanities Citation Index, Science Citation Index Expanded, and Social Sciences Citation Index. Collectively, these indexes cover 8,700 scholarly and technical journals completely and 13,300 selectively, in more than 230 disciplines. The Web of Science gateway allows searching the indexes individually or in combination. Features include cited reference searching, access to records related to a particular article, and number of times an article has been cited.