Uniform Resource Indicator (URI)

Identifies a Uniform Resource Indicator (such as a URL) that may be used as a live link, typically naming a website, such as <url>http://www.mulberrytech.com</url>


The content of this element may either be the URI:


or name the URI and use @xlink:href to specify the URI:

<uri xlink:href="http://www.mulberrytech.com">Mulberry's Website</uri>


content-type Type of Content
xlink:actuate Actuating the Link
xlink:href Href (Linking Mechanism)
xlink:role Role of the Link
xlink:show Showing the Link
xlink:title Title of the Link
xlink:type Type of Link
xmlns:xlink XLink Namespace Declaration

Related Elements

The <self-uri> element is used when a document is available in multiple forms, for example, as a means of indicating the online version of a print book. Conversely, a URI that indicates a different book or any other kind of external reference is usually tagged with the <ext-link> element. The element <uri>, although allowed everywhere <ext-link> is used, is more typically part of an address, information concerning a contributor, or part of a reference citation. Loosely put, an external link <ext-link> is intended to act as a link; a URI <uri> makes no promises but identifies a URI, such as a URL, when it is present in the text of an address or a citation; and <self-uri> points to another form of the same document.

The elements used in an address include the address class elements: <addr-line>, <country>, <fax>, <institution>, and <phone> and the address linking class elements: <email>, <ext-link>, <multi-link>, and <uri>.

Content Model

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

Expanded Content Model

(#PCDATA | bold | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | named-content | styled-content | sub | sup)*


Any combination of:

This element may be contained in:

<address>, <aff>, <alt-title>, <array>, <article-title>, <attrib>, <bold>, <book-meta>, <book-part-meta>, <book-title>, <chapter-title>, <chem-struct>, <chem-struct-wrap>, <collab>, <collection-name>, <comment>, <contrib>, <contrib-group>, <copyright-statement>, <corresp>, <def-head>, <disp-formula>, <disp-formula-group>, <element-citation>, <fig>, <fig-group>, <funding-statement>, <graphic>, <inline-supplementary-material>, <italic>, <license-p>, <media>, <meta-value>, <mixed-citation>, <monospace>, <named-content>, <overline>, <p>, <part-title>, <preformat>, <product>, <publisher-loc>, <related-article>, <related-object>, <roman>, <sans-serif>, <sc>, <source>, <strike>, <styled-content>, <sub>, <subtitle>, <sup>, <supplementary-material>, <table-wrap>, <table-wrap-group>, <td>, <term>, <term-head>, <th>, <title>, <trans-source>, <trans-subtitle>, <trans-title>, <underline>

Example 1

In an element-style bibliographic reference (punctuation and spacing removed):

<element-citation publication-type="book" publication-format="web">
<source>Fact sheet: AIDS information resources</source>
<publisher-loc>Bethesda (MD)</publisher-loc>
<publisher-name>National Library of Medicine
<date-in-citation content-type="updated">updated 2005 Jul 14</date-in-citation>
<date-in-citation content-type="access-date">cited 2006 Nov 15</date-in-citation>
<size units="screen">[about 3 screens]</size>
<comment>Available from:

Example 2

In a mixed-style bibliographic reference (punctuation and spacing preserved):

<mixed-citation publication-type="book" publication-format="web">
<source>Fact sheet: AIDS information resources</source>
[Internet]. <publisher-loc>Bethesda
(MD)</publisher-loc>: <publisher-name>National
Library of Medicine (US)</publisher-name>;
<year>2003</year> <month>May</month> <day>2</day>
[updated <date-in-citation content-type="updated">2005 Jul 14
</date-in-citation>; cited <date-in-citation 
content-type="access-date">2006 Nov 15</date-in-citation>].
<size units="screen">[about 3 screens]</size>.
Available from:

Example 3

In article metadata

<contrib contrib-type="author" rid="IIDR">
<given-names>James C.</given-names>
<aff id="IIDR">
<institution>Institute of Infectious Disease Research
<addr-line>Oberlin, MD 20869</addr-line>
<institution>Kalakukko Corporation</institution>
<addr-line>17 West Jefferson St.</addr-line>
<addr-line>Suite 207</addr-line>
<addr-line>New South Finland, MD 20856</addr-line> 
<phone>(301) 754-5766</phone>
<fax>(301) 754-5765</fax>