Babu, P Raamesh & Anandanatarajan, R <br/><br/>
Signals and systems, 4th ed. 

 - Scitech  Chennai  2010 
 - 586 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>621.38043/Bab