Impact Factor
3.39
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.
Title from cover.
Print issues ceased with v. 20, no.4 (2011).
None published in 1997.
Supplements accompany some issues.
Also issued online.