Impact Factor
1.54
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.
French title dropped with issue for July 1989.
Issues for <1998-> have also a distinctive title.
Called also TU.
Also issued online.
Vol. 45, no. 1 (1988)19920924 Notice not published Printed on acid-free paper