Babu, P Ramesh. <br/><br/>
Signals and systems / 

 - 4th ed / 
 - Chennai :  Scitech Publications (India) ,  2007 
<br/><br/><label>ISBN: </label>9788183712880 
<br/><br/><label>Subjects--Index Terms: </label>COMMUNICATION ENGINEERING 
<br/><br/><label>Dewey Class. No.: </label>621.3822  / BAB/S