Oppenheim, Alan V. <br/><br/>
Signals & Systems 
/ by  Alan V. Oppenheim et.al. 
 - 2nd ed. 
 - New Delhi:  Prentice -Hall Of India ,  1997 
 - xv,957p. 
<br/><br/><label>ISBN: </label>8120312465 
<br/><br/><label>Dewey Class. No.: </label>621.38043  / OPP/S