APA Journal-Publishing DTD Tag Library
American Psychological Association (2013)
xref
Cross Reference (MathML 2.0 Tag Set)
See documentation for the Mathematical Markup Language (MathML) 2.0 Tag Set.
Attribute Values
In Element
<mml:math>
Value
Meaning
An identifier (IDREF)
Points to another MathML element. See MathML documentation.
Restriction:
This attribute may be specified if the element is used.