<xs:complexType name="attributeReference"><xs:annotation><xs:documentation>Generic type for criterion, coalition and list of criteria references.</xs:documentation></xs:annotation><xs:choice><xs:element name="attributeID" type="xs:string"/><xs:element name="attributesSetID" type="xs:string"/><xs:element name="attributeSet" type="xmcda:attributesSet"/></xs:choice></xs:complexType>