Impact Factor
3.65
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.
Issues for <2001-> do not have subtitle.
Print issues ceased with v. 39, no. 12 (2011).
Also issued online.
Vol. 23, no. 3 (1995)19950518 Notice not published Printed on acid-free paper