Year of publication of the article or other work.
The <year> element is used in two contexts: as a part of the metadata concerning the article itself, and as part of a description of a cited work inside a bibliographic reference (<citation>) element.
Authoring and Conversion Note: When possible, the year should be expressed as a four-digit number, for example, “1776”, “1924”, or “0042”.
Text, numbers, or special characters
In article metadata
<article-meta> ... <author-notes>...</author-notes> <pub-date pub-type="pub"> <day>27</day> <month>3</month> <year>1999</year> </pub-date> <volume>318</volume> <issue>7187</issue> <fpage>837</fpage><lpage>841</lpage> <history> <date date-type="accepted"> <day>29</day><month>1</month> <year>1999</year></date> </history> <copyright-statement>...</copyright-statement> <abstract>...</abstract> ...</article-meta>
In a bibliographic reference list
<ref-list>...
<ref id="B8"><label>8</label>
<citation>
<name><surname>Weissert</surname>
<given-names>W</given-names></name>
<name><surname>Wan</surname>
<given-names>T</given-names></name>
<name><surname>Livieratos</surname>
<given-names>B</given-names></name>
<name><surname>Katz</surname>
<given-names>S</given-names></name>
<article-title>Effects and costs of day-care services
for the chronically ill: a randomized experiment.</article-title> <source>Medical Care</source>
<volume>18</volume>
<year>1980</year>
<fpage>567</fpage><lpage>584</lpage>.
<pub-id pub-id-type="pmid">6772889</pub-id>
</citation>
</ref>
...</ref-list>
common.ent