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<issn-l> ISSN-L (Linking ISSN)

An ISSN designated by an ISSN Centre to group together the different media versions of a work. Since a single ISSN-L is assigned no matter how many media formats of a work there are, the ISSN-L can be used to link among the different media versions of the work or continuing resource, for example, both the printed and online versions of the work.
Attributes
assigning-authority
specific-use

Base Attributes

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

(#PCDATA)*

Tagged Sample

With typed <issn> 

...
<journal-meta>
 <journal-id journal-id-type="pmc">pnas</journal-id>
 <journal-id journal-id-type="pubmed">Proc Natl Acad Sci U S A</journal-id>
 <journal-id journal-id-type="publisher">PNAS</journal-id>
 <issn publication-format="print">0027-8424</issn>
 <issn publication-format="electronic">1091-6490</issn>
 <issn-l>0027-8424</issn-l>
 <publisher>
  <publisher-name>The National Academy of Sciences</publisher-name>
 </publisher>
</journal-meta>
...