Impact Factor
1.43
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.
Published also in French, Spanish, and German editions, 1942 ; in Italian, Jan. 1948-
Also i ssued online.
Vol. 4, no. 1 (1980)19920824 Notice not published Printed on acid-free paper