title: ATOM to RSS feeds converter
body: <p>I found this working converter: <a href="http://feedmix.novaclic.com/atom2rss.php" rel="nofollow">http://feedmix.novaclic.com/atom2rss.php</a></p>
  
  <p>However I would like to have a source code. Where can I found a working one for PHP?</p>