<issn>
ISSN (in a citation)
Within a citation (such as a <mixed-citation> or an <element-citation>), the International Standard Serial Number, the international code that uniquely
identifies a serial publication title.
Remarks
Usage: The format/medium type of a particular <issn> can be
captured using the @publication-format attribute.
Attributes
Model Description
Text, numbers, or special characters, zero or more
This element may be contained in:
Example
...
<std-ident>
<originator>NISO</originator>
...
<isbn publication-format="HTML">978-1-937522-68-1</isbn>
<isbn publication-format="PDF">978-1-937522-69-8</isbn>
<issn specific-use="National Information standards series">1041-5653</issn>
<year iso-8601-date="2015">2015</year>
</std-ident>
...