Impact Factor
3.33
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.
Print issues ceased with 2015?
Four issues constitute a volume.
Also issued online.
Vol. 109, no. 1 (SEP 1994)19950928 Notice published Printed on acid-free paper that meets the full ANSI standard for Permanent Paper