Henry-Labordere, A. <br/><br/>
Virtual roaming systems for GSM, GPRS, and UMTS :  open connectivity in practice / 
Arnaud Henry-Labordere. 
 - Chichester, West Sussex, U.K. ;  Hoboken, NJ :  John Wiley,  2009. 
 - xxxv, 304 p. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>9780470682623 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roaming (Telecommunication)
<br/><br/><label>Dewey Class. No.: </label>621.3821  / H521V