Gopal, R. <br/><br/>
Problems and solutions in signals and systems / 

 - New Delhi,  CBS Publishers,  c2004. 
 - 354p. ;  ill. ;  21 cm. 
<br/><br/><label>ISBN: </label>8123911459 
<br/><br/><label>Dewey Class. No.: </label>621.3822320