I am not getting the Expected Output by following inputs. Any idea? Thanks
in advance.

Xslt
<xsl:template match="w:p">
   <xsl:if test="w:pPr/w:pStyle/@w:val='Authors0'">
    <aug>
     <xsl:apply-templates select="*" mode="make-tokens"/>
   </aug>
</xsl:if>
</xsl:template>
<xsl:template match="*" mode="make-tokens">
  <xsl:for-each select="tokenize(.,', ')">
   <xsl:if test=".!=''">
    <au><xsl:copy-of select="."/></au>
   </xsl:if>
  </xsl:for-each>
 </xsl:template>
 <xsl:template match="w:r[w:rPr/w:vertAlign/@w:val='superscript']"
mode="make-tokens">
  </xsl:variable>