The <issn> element holds an International Standard Serial Number, the international code that uniquely identifies a serial publication title. The format/medium type of an <issn> can be captured using the @publication-format attribute. T&F uses two key publication attributes; one for print, one for online:
<issn publication-format="print">1040-8347</issn>
<issn publication-format="electronic">1547-6510</issn>
When an ISSN appears in <journal-meta> this indicates the ISSN of the journal in which the content is published. The <journal-meta> element MUST contain at least one non-empty <issn> element.
Similarly, when an ISSN for another journal appears within a citation <mixed-citation> or product information <product> element, it should be tagged in an <issn> element.
Please note, only the ISSN identifier itself may appear within the <issn> element. The contents of the element should NOT be prefixed with any additional characters.
Correct example: <issn>1040-8347</issn>
Incorrect example: <issn>ISSN: 1547-6510</issn>
Example 1: Print and online ISSNs contained in journal-meta
<journal-meta>
<journal-id journal-id-type="publisher-id">CRES</journal-id>
<journal-id journal-id-type="title-id">cres20</journal-id>
<journal-title-group>
<journal-title>Regional Studies</journal-title>
</journal-title-group>
<issn publication-format="print">0034-3404</issn>
<issn publication-format="electronic">1360-0591</issn>
<publisher>
<publisher-name>Routledge</publisher-name>
</publisher>
</journal-meta>
Example 2: ISSN within a citation
Correct:
<mixed-citation publication-type="journal"><person-group person-group-type="author"><string-name><surname>Hadas</surname>, <given-names>E.</given-names></string-name></person-group> <year>2015</year>. “<article-title>An Overview of Methods for Tree Geometric Parameter Estimation from ALS Data in the Context of Their Application for Agricultural Trees</article-title>.” <source><italic>Acta Scientarum Polonorum Geodesia Et Descripto Terrarum</italic></source> <volume>14</volume>(<issue>3–4</issue>): <fpage>5</fpage>–<lpage>28</lpage>. <issn publication-format="electronic">2083-8662</issn>.</mixed-citation>
As with ISSNs in journal-meta, ONLY the ISSN number (the XXXX-XXXX digits) should be tagged inside the element:
Incorrect:
<mixed-citation publication-type="journal"><person-group person-group-type="author"><string-name><surname>Hadas</surname>, <given-names>E.</given-names></string-name></person-group> <year>2015</year>. “<article-title>An Overview of Methods for Tree Geometric Parameter Estimation from ALS Data in the Context of Their Application for Agricultural Trees</article-title>.” <source><italic>Acta Scientarum Polonorum Geodesia Et Descripto Terrarum</italic></source> <volume>14</volume>(<issue>3–4</issue>): <fpage>5</fpage>–<lpage>28</lpage>. <issn publication-format="electronic">ISSN: 2083-8662</issn>.</mixed-citation>