Web of Science (Core Collection) Current and retrospective multidisciplinary information from approximately 8,700 of the most prestigious, high impact research journals in the world. Use Web of Science to perform a cited reference search, where you can look up an article and see how many times it has been cited. The Web of Science Core Collection includes the following databases: Science Citation Index (1900-present), Social Sciences Citation Index (1900-present), Arts & Humanities Citation Index (1975-present), Conference Proceedings Citation Index (1975-present), Book Citation Index (2005-present), Emerging Sources Citation Index (2015-present), Current Chemical Reactions (1985-present), Index Chemicus (1993-present)