Impact Factor
3.23
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. 9, no. 4, 1980; title from cover.
Imprint varies.
Also issued online.
Articles in English, French or German; summaries in all three languages.
v. 28, no. 1 (JAN 1999)20020918 Notice published Printed on acid-free paper