Held, Gilbert.  <br/><br/>
A Practical Guide to Content Delivery Networks /  
Held Gilbert. 
 - 2nd edition. 
 - Boca Raton, Florida :   CRC Press,   2011. 
 - XVIII, 286 s.:   il.;   24 cm. 
<br/><br/><label>ISBN: </label>9781439835883