Oppenheim, Alan V. <br/><br/>
Discrete-time signal processing / 
Alan V. Oppenheim, Ronald W. Schafer 
 - 2nd ed. 
 - Upper Saddle River, NJ :  Prentice Hall,  1999 
 - xxvi, 870 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. 851-858) and index 
<br/><br/><label>ISBN: </label>013240334X 0130834432 (Int. ed.) 9780130834430 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Signal processing--Mathematics<br/>Discrete-time systems