Eberspacher, Jorg. , <br/><br/>
GSM :  switching, services and protocols / 
Jorg Eberspacher, Hans-Jorg Vogel, Christian Bettstetter. 
 - 2nd ed. 
<br/><br/> Prev edition : GSM switching, services, and protocol. 1999 
<br/><br/><label>ISBN: </label>047149903X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Global system for mobile communications.
<br/><br/><label>LC Class. No.: </label>TK5103.483   / .E33 2001