Impact Factor
3.00
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.
No. of issues per vol and the no. of vols. varies, 2002-
Supplements accompany some numbers.
Also issued online.
Vol. 20, no. 1 (1980)19920831 Notice published Printed on acid-free paper