Hi all,
  I am new to appl xslt/xml conversion,

I want to club multiple elements to a cluster and become childs of a
new parent element.

Input is :

<author-group>
<author>
  <given-name>A.N.</given-name>
  <surname>Chiardfsf</surname>
  <cross-ref refid="aff1">
   <sup>a</sup>
  </cross-ref>
  <cross-ref refid="cor1">
   <sup>wkqwj<sup>
  </cross-ref>
  <e-address type="email">asd@xxxxxxxxxx</e-address>
 </author>
 <author>
  <given-name>L.J.</given-name>
  <surname>Tfwqqf</surname>
  <cross-ref refid="aff1">
   <sup>a</sup>
  </cross-ref>
 </author>
 <author>
  <given-name>W.F.</given-name>
  <surname>Eqwfq</surname>
  <cross-ref refid="aff2">
   <sup>b</sup>
  </cross-ref>
 </author>
<affiliation id="aff1">
  <label>a</label>
  <textfn>zsg Divisionsdfgsfg, sgs</textfn>
 </affiliation>
 <affiliation id="aff2">
  <label>b</label>
  <textfn>DGD, USA</textfn>
 </affiliation>
 <correspondence id="cor1">
  <label>rewt</label>
  <text>Corresponding author. Tel:MKKWE W QWQWE</text>
 </correspondence>
</author-group>


I want to club all "author" elements and need to placed under a parent
"authors" as follows:


required output:


<author-group>
<authors>
 <author>
  <given-name>A.N.</given-name>
  <surname>Chiardfsf</surname>
  <cross-ref refid="aff1">
   <sup>a</sup>
  </cross-ref>
  <cross-ref refid="cor1">
   <sup>wkqwj<sup>
  </cross-ref>
  <e-address type="email">asd@xxxxxxxxxx</e-address>
 </author>
 <author>
  <given-name>L.J.</given-name>
  <surname>Tfwqqf</surname>
  <cross-ref refid="aff1">
   <sup>a</sup>
  </cross-ref>
 </author>
 <author>
  <given-name>W.F.</given-name>
  <surname>Eqwfq</surname>
  <cross-ref refid="aff2">
   <sup>b</sup>
  </cross-ref>
 </author>
</authors>
   <affiliation id="aff1">
  <label>a</label>
  <textfn>zsg Divisionsdfgsfg, sgs</textfn>
 </affiliation>
 <affiliation id="aff2">
  <label>b</label>
  <textfn>DGD, USA</textfn>
 </affiliation>
 <correspondence id="cor1">
  <label>rewt</label>
  <text>Corresponding author. Tel:MKKWE W QWQWE</text>
 </correspondence>
</author-group>


Regards
Aruthce