need help in xslt...

Hi,
i m new to xslt and trying to make a portal which uses this.

I want to use the distinct feature of xslt. Can someone help me on this.

This is the schema. and i have xml's which have data in this format.
<Paper monthid="number">
<Author>                               //there can be multiple author
tags.if paper is written by many authors.
<Name>  </Name>

</Author>
<Topic> </Topic>
<Year> </Year>
<Month> </Month>
<Full-paper-link> </Full-paper-link>
<Conference> </Conference>
<Abstract> </Abstract>
</Paper>

Now all i want to do is take out papers which are distinct. i have 4 xml's
which have common papers.

common i mean (same authors, same topic, same month, same year).

Can someone guide me on this.
-- 
Thanks n Regards
Viral Gupta

When a man knows what he wants, the world steps aside to make way for him.

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