The Library subscribes to hundreds of databases. Consult the A-Z Databases list to see them. Search for or browse online resources by subject (broad academic disciplines) or by database type (article databases, book and film reviews, statistics and numeric data, etc.)
Indexes leading journals in the arts, humanities, sciences and social sciences. Allows cited reference searching. (ISI Web of Knowledge) [1900 - present]
If an article is relevant to your topic, it can be very helpful to see who has cited it. There are several different ways to do this, and the results will overlap -- no single method is comprehensive.