Crossref is an official DOI registration firm that functions as a cooperative cross-publisher collaboration to enable accurate and useful citation linking via DOIs (Digital Object Identifiers). A DOI is an identifier that is unique for each content item and it does not change with time.

To run Crossref Reference Linking and Correction on a document:

1. Complete Bibliographic Reference processing, including the cleanup and reprocessing of all references that eXtyles did not automatically fix.
2. Be sure you have a connection to the Internet.
3. Select eXtyles > Advanced Processing > Crossref Reference Linking and Correction.

Crossref Reference Linking and Correction should take approximately 30 seconds for 60 references, and it includes the following features:

1. It informs you of the number of references that match rather than the number that failed to match.
2. Its results are generally quite good, but occasionally incorrect results occur because eXtyles will try to match a reference even if not all components of the reference are correct. In all cases in which a match is made with this so-called fuzzy matching, you will receive a warning in the Word document that the reference data and the Crossref data do not match.
3. It has been configured to automatically insert the DOI as a hyperlink in the reference section. This insertion makes it easy to identify which references have been matched on Crossref.

Crossref Correction

Crossref Reference Linking and Correction will also intelligently mark and merge discrepancies between your reference and the Crossref record. Crossref Correction includes these additional features:

1. Crossref Reference Correction adds missing data (e.g., additional author names or missing volume or page numbers) to the reference; it does not attempt to correct existing data (e.g., article titles) supplied by the author.
2. It will insert comments about discrepancies in author names, article titles, and so on. For instance, for this reference:

<jrn>9. Zhang, S., et al. “Demonstration of near-infrared negative-index materials.” Physical Review Letters (2005): 137404.</jrn>

Crossref Reference Correction returns the following comment:

eXtyles has not updated ref. 9 “Zhang, Fan, Panoiu, Malloy, Osgood, Brueck, 2005” because the article title in Crossref significantly differs from the author’s original. The Crossref reference is Zhang, S., et al. “Experimental Demonstration of Near-Infrared Negative-Index Metamaterials.” Physical Review Letters 95, no. 13 (2005).

If the reference returned by Crossref is correct, the user can easily paste in the relevant portion or the entire reference. Note that in this example, Crossref indexes the article title in title case rather than sentence case, so the editor may opt to manually edit the reference instead.