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<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.

Usage/Remarks

The format/medium type of a particular <issn> can be captured using the @publication-format attribute.
Attributes
content-type
originator
pub-type
publication-format
specific-use

Base Attributes

id
xml:base
Models and Context
May be contained in
<element-citation>, <mixed-citation>, <related-article>, <related-object>, <std-ident>
Description
Text, numbers, or special characters, zero or more
Content Model
<!ELEMENT  issn         (#PCDATA %issn-elements;)*                   >
Expanded Content Model

(#PCDATA)*

Tagged Sample

Part of <std-ident> 

...
<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>
...