Impact Factor
2.56
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.
Description based on: v. 7, issue 2 ([Feb.] 1981); title from cover.
Some no. combined.
Also issued online.
Vol. 7, no. 1 (DEC 1981)19911012 Notice not published Printed on acid-free paper