Open Access Publication Date
If an article is open-access then include a <pub-date> element
containing a @pub-type attribute with value open-access
.
Note: Typically this date is the same as the Online Publication Date, however it must be set to the appropriate
date when the status of an article is changed to open-access after initial publication.
The <pub-date> element must have a @iso-8601-date
attribute containing a ISO-8601 formatted date (See https://www.iso.org/iso-8601-date-and-time-format.html)
The <pub-date> must have <day> ,
<month> and <year> child elements
populated with the correct numerical values.
The date values must include leading zeros.
Example
<pub-date pub-type="open-access" iso-8601-date="2023-06-07">
<day>07</day>
<month>06</month>
<year>2023</year>
</pub-date>