Impact Factor
3.16
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 for 1943-59 have English title only.
Print issues ceased with v. 103 (2012).
Supplements accompany some issues.
Also issued online.
Text chiefly in English, with some in French.