Oppenheim, Alan V. ; Willsky, Alan S. <br/><br/>
Signals & Systems 
/ by Alan V Oppenheim et.al 
 - 2nd ed. 
 - Newdelhi:  PHI learning private limited,  1997. 
 - xxx, 957p. ; 28cm. 
<br/><br/><label>ISBN: </label>9788120312463 
<br/><br/><label>Dewey Class. No.: </label>003.54  / OPP/S