CrossMark Policy



Applying the CrossMark button is a commitment by the journal USEFUL to maintain the content published and alert readers to changes if and when they occur.

CrossMark is a multi-publisher initiative from Crossref to provide a standard way for readers to locate the current version of a piece of content. By applying the Crossmark logo, the journal USEFUL is committing to maintaining the content it publishes and to alerting readers to changes if and when they occur.
Clicking on the Crossmark logo will tell you the current status of a document and may also give you additional publication record information about the document.

All content published in the journal USEFUL is permanently published, regardless of the outcome of the peer review that follows after publication.

Correction and Retraction

Authors can revise, change and update their articles by publishing new versions, which are added to the article’s history.

Articles may be retracted for several reasons. This action is reserved for articles that are seriously flawed and so the findings or conclusions cannot be relied upon.

Updates may be deposited only for changes that are likely to affect “the interpretation or crediting of the work.” Updates not be deposited for minor changes such as spelling corrections, formatting changes, etc. 

There are 12 defined types of accepted “update” within Crossmark. The values for these are:

  • addendum
  • clarification
  • correction
  • corrigendum
  • erratum
  • expression_of_concern
  • new_edition
  • new_version
  • partial_retraction
  • removal
  • retraction
  • withdrawal

If an update does not fall into one of these categories it should instead be placed in the “more information” section of the pop-up box by being deposited as an assertion.

The journal USEFUL also refer to these resources:


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