Impact Factor
4.04
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.
Editors: 1973- G. A. Kerkut and J. W. Phillis.
Also available online.
Vol. 33, no. 2 (1989)19920909 Notice published Printed on acid-free paper that meets the full ANSI standard for Permanent Paper