Catalog reader on several pages

Hi all!
A have a trouble with custom reader structure. I want show catalog item on a several pages in site structure. In my example it was 'general description' and 'technical description' pages.
So i create two pages in a structure and two reader modules, associated with these pages. I can navigate between them using a link like index.php?id=<page_ID>&item=<item_ID>. Then i use mod_rewrite for the user-friendly url's like http://domain.tld/<item_ID>/<page_ID>/

Code:

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RewriteRule ([^/\.]+)/([^/\.]+)/?$ index.php/?id=$2&items=$1 [L]

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It works perfect only in one case - when page alias disable.

And now i don't know what do next. What should i do with rewrite rule to provide aliases support?

Regards, Paul
ps Sorry for my terrible english