A Comparison of SciFinder and Scopus XXIII
This post compares the cited reference results of SciFinder and Scopus for this article:
Altered phase diagram due to a single point mutation in human γD-crystallin. Proceedings of the National Academy of Sciences of the United States of America (PNAS) 104 (43), pp. 16856-16861 (2007).
SciFinder found 39 cited references with 13 unique and Scopus found 26 and no unique cited references. One of the unique cited references, in the journal Molecular Vision, has no article record in Scopus. Molecular Vision is covered by Scopus, but the article was published in late December 2011 and may not yet have been processed by Scopus. Three of the unique cited references, not covered by Scopus, are chapters in monographs. They are Synchrotron Radiation and Structural Proteomics, in Pan Stanford Series on Nanobiotechnology, and 2 chapters in Thermodynamics of Amino Acid and Protein Solutions published by Transworld Research Network in India. Similarly, there are 6 arXiv.org unique records in the SciFinder cited reference results, and arXiv.org is not covered by Scopus. Each of the 6 has the equivalent journal article record in SciFinder as well as in Scopus. I’m beginning to think that this is “double counting" when the nearly identical arXiv.org article and journal article are both counted as a single cited reference. Two of the SciFinder unique cited references were not actually unique. There are article records from PLoS One and PNAS that appear twice on the cited reference list, one article record coming from CAPlus and the other from Medline. I will be checking with CAS to see why this happened. Finally, there is a unique cited reference found by SciFinder in Atmospheric Measurement Techniques (AMT). Although AMT is not covered by Scopus, when checking the citation list of the actual article, the above PNAS article is not cited.