Impact Factor
2.93
Estimated influence, citation density, publishing volume, and citation integrity from the analytics table.
Volume, recency, access pattern, and citing-community signals from the journal analytics record.
Recent article records with DOI-first linking and condensed abstracts.
Description based on: Vol. 25, no. 1 (Apr. 1999); title from cover.
Print issues ceased with v. 40, no. 3 (Dec. 2014).
Also issued online.