Impact Factor
3.05
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.
Also issued online.
Indexes: Vols. 1-20, 1950-69, in v. 20; Vols. 21-25, 1970-79, in v. 30.
Vol. 36, no. 1 (1985)19920824 Notice not published Printed on acid-free paper