Impact Factor
3.69
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 v. 24, no. 10 (2011).
Also issued online.
Vol. 2, no. 1 (1989)19920909 Notice not published Printed on acid-free paper