The service provides measures of popularity and influence of published papers and authors. It generates data recording how often a publication is cited by other scholars and how influential those citations are within the author's field. Data conform to the Standardized Usage Statistics Harvesting Initiative (SUSHI) protocol (ANSI/NISO Z39.93) for data about usage of electronic resources.
API methods support access to reports that track citations of a publication in journals, databases, and books. Returned data can be formatted according to the provider's proprietary COUNTER protocol or the SUSHI standard.