Three options for citation tracking: Google Scholar, Scopus and Web of Science

摘要: Researchers turn to citation tracking find the most influential articles for a particular topic and see how often their own published papers are cited. For years researchers looking this type of information had only one resource consult: Web Science from Thomson Scientific. In 2004 two competitors emerged – Scopus Elsevier Google Scholar Google. The research reported here uses analysis in an observational study examining these three databases; comparing counts disciplines (oncology condensed matter physics) (1993 2003) test hypothesis that different scholarly publication coverage provided by search tools will lead each. Eleven journal titles with varying impact factors were selected each discipline using Journal Citation Reports (JCR). All retrieved 1993 2003, stratified random sample was chosen, resulting four sets articles. During week November 7–12, 2005, article extracted sources. actual citing references subset 2003 also gathered oncology returned highest average number citations, 45.3. citations (8.9) 2003. physics (22.5 3.9 respectively). data showed significant difference mean rates between all pairs resources except largest amount unique material physics. This did not identify any as answer needs. strength providing literature current (2003) articles, while produced more physics, some material. Our indicate question which tool provides complete set may depend on subject year given article.