Impact Factor
4.02
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.
Imprint varies.
Also issued online.
Vol. 7, no. 9 (1989)19910320 Notice published Printed on acid-free paper that meets the full ANSI standard for Permanent Paper