Abt HA. "A comparison of the citation counts in the Science Citation Index and the NASA Astronomical Data System" Chapter in Organizations and Strategies in Astronomy, Vol:6, ed. Andre Heck, 2004. Kluwer .

[Eugene Garfield]

TITLE : A COMPARISON OF THE CITATION COUNTS IN THE SCIENCE CITATION INDEX
        AND THE NASA ASTRONOMICAL DATA SYSTEM
        (Chapter in Organizations and Strategies in Astronomy, Vol. 6, ed.

        Andre Heck, 2004)

AUTHOR : Helmut A. Abt

ADDRESS:
Kitt Peak National Observatory
Tucson, AZ 85726-6732,
USA
E-mail: abt at noao.edu

FULL TEXT AVAILABLE AT :
http://garfield.library.upenn.edu/papers/helmutabtorgstratastronv6y2004.html

Abstract
>From a comparison of 1000+ references to 20 papers in four fields of
astronomy (solar, stellar, nebular, galaxy), we found that the citation
counts in Science Citation Index (SCI) and Astronomical Data System (ADS)
agree for 85% of the citations. ADS gives 15% more citation counts than SCI.
SCI has more citations among physics and chemistry journals, while ADS
includes more from conferences. Each one misses less than 1% of the citations.