Impact Factor
4.24
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 issued ceased with v. 8, no.6 (Dec.2008)
Also issued online.
v. 1, no. 1 (Aug. 2001)20030311 Notice published Printed on acid-free paper