Volume Number


Number of a journal (or other document) within its series


The <volume> element is used in two contexts: 1) as a part of the metadata describing the article itself, and 2) as part of a description of a cited work inside a bibliographic reference (<citation> or <nlm-citation>).

For extensive examples of formatted <nlm-citation>s including use of <volume>s in <nlm-citation>s, see: Sample PubMed Central Citations. To see tagged versions of these examples, see: Sample PubMed Central Citations - XML Tagged.

Related Elements

The related <volume-id> element is used to record an identifier, such as a DOI, that describes an entire volume of a journal.

Model Information

Content Model

<!ELEMENT  volume       (#PCDATA %volume-elements;)*                 >


Text, numbers, or special characters, zero or more

This element may be contained in:

<article-meta> Article Metadata; <citation> Citation; <nlm-citation> NLM Citation Model; <product> Product Information; <related-article> Related Article Information

Tagged Examples

Example 1

In article metadata:

<article-id pub-id-type="pmid">10092260</article-id> 
<article-title>Systematic review of day hospital care
for elderly people</article-title>
<pub-date pub-type="pub"><day>27</day>
<history><date date-type="accepted">

Example 2

In a NLM-style bibliographic citation:

<nlm-citation citation-type="journal">
<article-title>Electrogastrographic study of patients with 
unexplained nausea, bloating and vomiting</article-title>