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%ref.class; Just Reference Class
The element <ref> for use in models.
Declaration
<!ENTITY % ref.class "ref" >
<!ENTITY % ref.class "ref" >
Journal Archiving and Interchange Tag Library NISO JATS Version 1.3d2 (ANSI/NISO Z39.96-2019)
Version of December 2020 (documentation updated April 2021)