<ref>

Mandatory attributes:

1. @id (see Attribution Tips for @id)

Appears in	Frequency
<ref-list>	One or more times

This element is used solely to identify references in any format, and describes books, journals, conferences, etc. This element must have one element <mixed-citation> and may also have one element <element-citation>.

Note

• If the reference has a DOI number it must be tagged inside an <element-citation> with the element <pub-id>

Examples:

• 1. Ref with one element-mixed-citation

• 2. Ref with one element-mixed-citation and one element-element-citation

1. Ref with one <mixed-citation>

...
    <ref-list>
      <ref id="B1">
        <mixed-citation publication-type="journal">
          ...
        </mixed-citation>
      </ref>
      <ref id="B2">
        <mixed-citation publication-type="book">
          ...
        </mixed-citation>
      </ref>
      ...
    </ref-list>
...

2. Ref with one <mixed-citation> and one <element-citation>

...
    <ref-list>
      <ref id="B1">
        <mixed-citation publication-type="journal">
          ...
        </mixed-citation>
        <element-citation>
          <pub-id pub-id-type="doi">
              https://doi.org/10.7202/1016689ar
          </pub-id>
        </element-citation>
      </ref>
      <ref id="B2">
        <mixed-citation publication-type="book">
          ...
        </mixed-citation>
      </ref>
      ...
    </ref-list>
...