Impact Factor
4.16
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.
Quarterly.
Title from cover.
Print issues ceased with v. 20, no. 4 (2011).
Also issued online.
Vol. 1, no. 1 (MAR 1992)19961115 Notice published Printed on acid-free paper