ref-type

Type of Cross-Reference

Type of element that is the target of the cross-reference (for example: a Figure (“fig”), an Author Note (“author-notes”), or a Bibliographic Reference (“bibr”)). The values may be used, for example, for type-specific processing or validation.

Remarks

The <xref> element may be used to reference anything that has an @id attribute. This single element takes the place of the many named types of references (such as figure references, table references, and footnote references) that are common in many journal tag sets. This attribute can preserve the information from such tag sets concerning the type of element to which the cross-reference is pointing.

Used on Element: <xref>

ValueMeaning
affAffiliation
appAppendix
author-notesAuthor notes
awardPoints to the description of or identifier of a grant or award (<award-id>), possibly to an entire awards group (<award-group>)
bibrBibliographic reference (typically to a <ref> element, but it may point to a <element-citation> or <mixed-citation> if there are multiple citations inside the <ref> element)
bioBiography (typically of a contributor)
boxed-textTextbox or sidebar
chemChemical structure (to a <chem-struct> or <chem-struct-wrap> element)
collabCollaboration
contribContributor
correspCorresponding author
disp-formulaDisplay formula
figFigure or group of figures (to a <fig> or <fig-group> element)
fnFootnote
kwdKeyword
listList or list item (to a <list> or <list-item> element; also, possibly to a <def-list> or <def-item> element)
otherNone of the items listed
platePlate
schemeScheme
secSection
statementStatement
supplementary-materialSupplementary information
tableTable or group of tables (to a <table-wrap> or <table-wrap-group> element)
table-fnTable footnote
Restriction@ref-type is an optional attribute; there is no default.

Example

...  
<p>... The third nucleotide (CG<bold>A</bold>) at codon 529, which
is a specific nucleotide of <italic>M. tuberculosis</italic>
(<xref ref-type="bibr" rid="B8">8</xref>, <xref ref-type="bibr"
rid="B11">11</xref>), was not clearly determined ...</p>
...