Impact Factor
3.17
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. 50, no. 8 (Dec. 2004).
Some papers for 2001- are only available online.
Assumes the numbering and ISSN of another serial with the same title published in Oxford by Pergamon, 1977- .
Supplements accompany some vols., -1996.
Also issued online.