Web of Science (Clarivate Analytics)
Multidisciplinary & very current.
Citations from ~8,500 of the most prestigious, high impact research journals in the world.
Also provides cited reference searching: navigate forward and backward through the literature from a specific article.
Medline (Clarivate Analytics)
PubMed database through the Web of Knowledge search interface
BIOSIS Citation Index via the Web of Science Interface (Clarivate Analytics)
Citations with abstracts to worldwide biological and medical literature. Content from journals, meetings, patents, and books.