Eberspacher, Jorg. <br/><br/>
GSM :  Switching, Services and Protocols 

 - New York :  John Wiley & Sons, Ltd.,  c2001. 
 - xiv, 332p.:  [8-D] 
<br/><br/><label>ISBN: </label>047149903X 
<br/><br/><label>Dewey Class. No.: </label>621.38456  / EBP/GSM