Biomed Digit Libr. 2006 Jun 29;3:7

Bakkalbasi N, Bauer K, Glover J, Wang L. Yale University Library.

Researchers turn to citation tracking to find the most influential articles for a particular topic and to see how often their own published papers are cited. For years researchers looking for this type of information had only one resource to consult: the Web of Science from Thomson Scientific. In 2004 two competitors emerged--Scopus from Elsevier and Google Scholar from Google.