Web of Science
Web of Science (previously known as Web of Knowledge) is an online subscription-based scientific citation indexing service originally produced by the Institute for Scientific Information (ISI), now maintained by Clarivate Analytics (previously the Intellectual Property and Science business of Thomson Reuters), that provides a comprehensive citation search. It gives access to multiple databases that reference cross-disciplinary research, which allows for in-depth exploration of specialized sub-fields within an academic or scientific discipline.
53 million records, 21,915 titles, 5,000 publishers: Scopus, the largest abstract and citation database of peer-reviewed literature, features smart tools to track, analyze and visualize research. Scopus delivers an overview of the world's research output in the fields of science, technology, medicine, social sciences and arts and humanities. As research becomes increasingly global, interdisciplinary and collaborative, you can make sure that critical research from around the world is not missed.