Bekkers, Rudi.  <br/><br/>
Mobile Telecommunications Standards GSM, UMTS, TETRA and ERMES /  
Bekkers Rudi. 
 - Boston :   Artech House,   2001. 
 - XVI, 627 s.:   il.;   23 cm. 
<br/><br/><label>ISBN: </label>1580532500