P5: Linee guida per la codifica e l'interscambio del testo elettronico

<rng:element name="biblStruct">
<rng:ref name="att.global.attributes"/>
<rng:ref name="att.declarable.attributes"/>
<rng:ref name="att.typed.attributes"/>
<rng:group>
 <rng:zeroOrMore>
  <rng:ref name="analytic"/>
 </rng:zeroOrMore>
 <rng:oneOrMore>
  <rng:ref name="monogr"/>
  <rng:zeroOrMore>
   <rng:ref name="series"/>
  </rng:zeroOrMore>
 </rng:oneOrMore>
 <rng:zeroOrMore>
  <rng:choice>
   <rng:ref name="model.noteLike"/>
   <rng:ref name="idno"/>
   <rng:ref name="relatedItem"/>
  </rng:choice>
 </rng:zeroOrMore>
</rng:group>
</rng:element>

element biblStruct
{
   att.global.attributes,
   att.declarable.attributes,
   att.typed.attributes,
   (
      analytic*,
      ( monogr, series* )+,
      ( model.noteLike | idno | relatedItem )*
   )
}