Impact Factor
2.99
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. 12, no. 8 (Dec. 2013).
Also issued online.
v. 1, no. 1 (Jan./Mar. 2002)20030910 Notice not published Printed on acid-free paper