Impact Factor
4.46
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.
Issues have also distinctive titles.
Print issues ceased wiith v. 8, no. 6 (Nov. 2008)
Also issued online.
v. 1, no. 1 (Jan 2001)20020315 Notice published Printed on acid-free paper