Poikselka, Miikka <br/><br/>
IMS  IP multimedia concepts and services 
by Miikka Poikselka and Georg Mayer 
 - 3rd ed 
 - Chichester  Wiley  2009 
 - xiv, 502p 
<br/><br/><label>ISBN: </label>9780470721964 
<br/><br/><label>Dewey Class. No.: </label>621.38212  / P09