<xs:attributeGroup name="biblio.class.attribute">
<xs:attribute name="class">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="doi"/>
<xs:enumeration value="isbn"/>
<xs:enumeration value="isrn"/>
<xs:enumeration value="issn"/>
<xs:enumeration value="istc"/>
<xs:enumeration value="libraryofcongress"/>
<xs:enumeration value="pubsnumber"/>
<xs:enumeration value="uri"/>
<xs:enumeration value="other"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="otherclass" type="xs:NMTOKEN"/>
</xs:attributeGroup> |