Crossmark Policy
CrossMark, a multi-publisher initiative from CrossRef, provides a standard way for readers to locate the authoritative version of a document. Elsevier recognizes the importance of the integrity and completeness of the scholarly record to researchers and librarians and attaches the highest importance to maintaining trust in the authority of its electronic archive. Clicking on the CrossMark icon will inform the reader of the document's current status and may provide additional publication record information about the document.
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Addendum: The publication item gives additional information regarding another publication item, mostly presenting additional results.
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Duplicate: Accidental duplication of an article in another journal. The text of the article is retracted. A single page replaces the HTML pages with citation details and an explanation. The PDF pages remain with a watermark on every page to notify it is a duplicate.
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Erratum: Article in which errors were reported in an earlier publication in the same journal. It can be Erratum (publishing error) and Corrigendum (author error).
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Removal: The text of the article is removed. The article's HTML and PDF pages are removed and replaced by a single page with citation details and an explanation.
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Retraction: The text of the article is retracted. A single page replaces the HTML pages with citation details and an explanation. The PDF pages remain with a watermark on every page to notify it is retracted.
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Review article: A substantial overview of original research, usually with a comprehensive bibliography, generally also contains a table of contents.
