Abstract
Purpose: To provide an overview of new citation-enhanced databases and to identify issues to
be considered when they are used as data source for performing citation analysis.
Design/methodology/approach: Reports the limitations of Thomson Scientific’s citation
indexes and reviews the characteristics of the citation-enhanced databases Chemical Abstracts,
Google Scholar and Scopus.
Findings: Suggests that citation-enhanced databases need to be examined carefully, with regard
to both their potentialities and their limitations for citation analysis.
Originality/value: Presents a valuable overview of new citation-enhanced databases in the
context of research evaluation.
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