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Access through your institution Buy or subscribe Databases such as Thomson Reuters' ISI Web of Science, Scopus, Google Scholar and Microsoft's Academic Search allow authors to
compute their own citation statistics, but they yield inconsistent results. The discrepancies come from differences in information sources and in temporal citation coverage. Web of Science
and Scopus, for example, provide citation data only for their indexed journals, giving different coverage for the number of journals, precursor articles and fields of academic research —
often with regional biases (such as European versus US sources). Google Scholar includes all journals (indexed, free access and popular science), conference proceedings, books, theses,
reports, local press and electronic sources — all subject to variable degrees of control and scrutiny. This is a preview of subscription content, access via your institution ACCESS OPTIONS
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institutional subscriptions * Read our FAQs * Contact customer support AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Institute of Agrifood Research and Technology (IRTA), Sant Carles de la
Ràpita, Spain Carles Alcaraz & Sofia Morais Authors * Carles Alcaraz View author publications You can also search for this author inPubMed Google Scholar * Sofia Morais View author
publications You can also search for this author inPubMed Google Scholar CORRESPONDING AUTHOR Correspondence to Carles Alcaraz. RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS
ARTICLE CITE THIS ARTICLE Alcaraz, C., Morais, S. Citations: results differ by database. _Nature_ 483, 36 (2012). https://doi.org/10.1038/483036d Download citation * Published: 29 February
2012 * Issue Date: 01 March 2012 * DOI: https://doi.org/10.1038/483036d SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link
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