Sorry Friday afternoon, need to correct the correction.


  Then something like 
   <xsl:variable name="x" select="@doc"/>
   <xsl:for-each select="$sorted-refs">
     <xsl:value-of select="id($x)/../@number"/>
   </xsl:for-each>

This won't work as the id attribute isn't of type ID in the node sets in
the variable. Could use a key or just
 <xsl:value-of
select="x:node-set($sorted-refs)/ref[*/@id=current()/@doc]/@number"/>

David

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