<relatedItem>

<relatedItem> contains or references some other bibliographic item which is related to the present one in some specified manner, for example as a constituent or alternative version of it.
Modulecore — 3 Elements Available in All TEI Documents
Attributes att.typed (@type, @subtype)
Used bybiblStruct model.biblPart
May contain
core: bibl biblStruct ptr ref
header: biblFull
msdescription: msDesc
Declaration
element relatedItem
{
   att.global.attributes,
   att.typed.attributes,
   ( model.biblLike | model.ptrLike )
}