January 24, 2022

Research Article: “Accuracy of Citation Data in Web of Science and Scopus”(Preprint)

The following article (preprint) was shared on arXiv earlier today.


Accuracy of Citation Data in Web of Science and Scopus


Nees Jan van Eck
Leiden University

Ludo Waltman
Leiden University


via arXiv


We present a large-scale analysis of the accuracy of citation data in the Web of Science and Scopus databases. The analysis is based on citations given in publications in Elsevier journals. We reveal significant data quality problems for both databases. Missing and incorrect references are important problems in Web of Science. Duplicate publications are a serious problem in Scopus.

Direct to Full Text Article
6 pages; PDF.

About Gary Price

Gary Price (gprice@mediasourceinc.com) is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at Ask.com, and is currently a contributing editor at Search Engine Land.