Essential Science Indicators (ESI) is one of ISI/Thomson's Web of Knowledge databases that provides more aggregate citation analysis than do the citation indices. "Types of data featured in ESI include most cited author rankings, institutional (university, corporate, government research lab) rankings, national rankings, and journal rankings....The data in ESI are limited to ISI-indexed journal articles only." ESI is updated bimontly (every other month).

URL: https://libproxy.usc.edu/login?url=http://www.webofknowledge.com/ESI