Babu, Ramesh R and Anandanatarajan R <br/><br/>
Signals and systems / 

 - 4th ed 
 - New Delhi,  Scitech Publications,  c2010. 
 - ill. ;  1.4p. ;  25 cm. 
<br/><br/><label>ISBN: </label>9788183712880 
<br/><br/><label>LC Class. No.: </label>19056-19060 
<br/><br/><label>Dewey Class. No.: </label>621.3822320