Impact Factor
2.26
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.
Issues also have distinctive titles.
Print issues ceased with v. 20, no. 4 (2012).
Issues also designated v. 11, no. 1-
Also issued online.