Impact Factor
3.36
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.
Print issues ceased with v. 22 (2013).
Issues for Sept. 1988- called also v. 1, no. 1- .
Also available online.