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Two new kids on the block: How do Crossref and Dimensions compare with Google Scholar, Microsoft Academic, Scopus and the Web of Science?

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Abstract

In the last 3 years, several new (free) sources for academic publication and citation data have joined the now well-established Google Scholar, complementing the two traditional commercial data sources: Scopus and the Web of Science. The most important of these new data sources are Microsoft Academic (2016), Crossref (2017) and Dimensions (2018). Whereas Microsoft Academic has received some attention from the bibliometric community, there are as yet very few studies that have investigated the coverage of Crossref or Dimensions. To address this gap, this brief letter assesses Crossref and Dimensions coverage in comparison to Google Scholar, Microsoft Academic, Scopus and the Web of Science through a detailed investigation of the full publication and citation record of a single academic, as well as six top journals in Business & Economics. Overall, this first small-scale study suggests that, when compared to Scopus and the Web of Science, Crossref and Dimensions have a similar or better coverage for both publications and citations, but a substantively lower coverage than Google Scholar and Microsoft Academic. If our findings can be confirmed by larger-scale studies, Crossref and Dimensions might serve as good alternatives to Scopus and the Web of Science for both literature reviews and citation analysis. However, Google Scholar and Microsoft Academic maintain their position as the most comprehensive free sources for publication and citation data.

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Notes

  1. Our Publish or Perish Dimensions searches for the three names we tested (Eugene Garfield, Blaise Cronin and Mike Thelwall) produced citation levels that were (slightly) above those reported for Scopus in this article. The lack of coverage for author searches in Dimensions reported in this article might thus have been caused by a problem in the author disambiguation system that has since been resolved.

  2. Our focus on the Social Sciences might limit generalization as the two commercial databases are less comprehensive for the Social Sciences, Arts & Humanities and to a lesser extent Engineering than for the Sciences and Life Sciences (for a detailed analysis, see Harzing and Alakangas 2016, 2017a). Hence, differences in coverage between the six data sources might be smaller for the Sciences and Life Sciences.

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Authors and Affiliations

  1. Middlesex University Business School, The Burroughs, Hendon, London, NW4 4BT, UK

    Anne-Wil Harzing

  2. Tilburg Institute of Governance, Tilburg University, Tilburg, The Netherlands

    Anne-Wil Harzing

Authors
  1. Anne-Wil Harzing
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Correspondence to Anne-Wil Harzing.

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Harzing, AW. Two new kids on the block: How do Crossref and Dimensions compare with Google Scholar, Microsoft Academic, Scopus and the Web of Science?. Scientometrics 120, 341–349 (2019). https://doi.org/10.1007/s11192-019-03114-y

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  • DOI: https://doi.org/10.1007/s11192-019-03114-y

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